diff --git a/libs/community/langchain_community/utilities/bibtex.py b/libs/community/langchain_community/utilities/bibtex.py
index 45d83aefea3..f9d4e880411 100644
--- a/libs/community/langchain_community/utilities/bibtex.py
+++ b/libs/community/langchain_community/utilities/bibtex.py
@@ -40,7 +40,7 @@ class BibtexparserWrapper(BaseModel):
 
         extra = Extra.forbid
 
-    @root_validator()
+    @root_validator(pre=True)
     def validate_environment(cls, values: Dict) -> Dict:
         """Validate that the python package exists in environment."""
         try:
diff --git a/libs/community/langchain_community/utilities/cassandra_database.py b/libs/community/langchain_community/utilities/cassandra_database.py
index 6b607c4c435..3d04c8cba68 100644
--- a/libs/community/langchain_community/utilities/cassandra_database.py
+++ b/libs/community/langchain_community/utilities/cassandra_database.py
@@ -482,7 +482,7 @@ class Table(BaseModel):
     class Config:
         frozen = True
 
-    @root_validator()
+    @root_validator(pre=False, skip_on_failure=True)
     def check_required_fields(cls, class_values: dict) -> dict:
         if not class_values["columns"]:
             raise ValueError("non-empty column list for must be provided")
diff --git a/libs/community/langchain_community/utilities/clickup.py b/libs/community/langchain_community/utilities/clickup.py
index 5d82a004168..6c05ec7dae1 100644
--- a/libs/community/langchain_community/utilities/clickup.py
+++ b/libs/community/langchain_community/utilities/clickup.py
@@ -323,7 +323,7 @@ class ClickupAPIWrapper(BaseModel):
 
         return data["access_token"]
 
-    @root_validator()
+    @root_validator(pre=True)
     def validate_environment(cls, values: Dict) -> Dict:
         """Validate that api key and python package exists in environment."""
         values["access_token"] = get_from_dict_or_env(
diff --git a/libs/community/langchain_community/utilities/dalle_image_generator.py b/libs/community/langchain_community/utilities/dalle_image_generator.py
index 6dddb710be8..fe7e8ddbaf9 100644
--- a/libs/community/langchain_community/utilities/dalle_image_generator.py
+++ b/libs/community/langchain_community/utilities/dalle_image_generator.py
@@ -89,7 +89,7 @@ class DallEAPIWrapper(BaseModel):
         values["model_kwargs"] = extra
         return values
 
-    @root_validator()
+    @root_validator(pre=False, skip_on_failure=True)
     def validate_environment(cls, values: Dict) -> Dict:
         """Validate that api key and python package exists in environment."""
         values["openai_api_key"] = get_from_dict_or_env(
diff --git a/libs/community/langchain_community/utilities/dataforseo_api_search.py b/libs/community/langchain_community/utilities/dataforseo_api_search.py
index 16c90fc4ff6..a2a1602c97a 100644
--- a/libs/community/langchain_community/utilities/dataforseo_api_search.py
+++ b/libs/community/langchain_community/utilities/dataforseo_api_search.py
@@ -42,7 +42,7 @@ class DataForSeoAPIWrapper(BaseModel):
     aiosession: Optional[aiohttp.ClientSession] = None
     """The aiohttp session to use for the DataForSEO SERP API."""
 
-    @root_validator()
+    @root_validator(pre=True)
     def validate_environment(cls, values: Dict) -> Dict:
         """Validate that login and password exists in environment."""
         login = get_from_dict_or_env(values, "api_login", "DATAFORSEO_LOGIN")
diff --git a/libs/community/langchain_community/utilities/dataherald.py b/libs/community/langchain_community/utilities/dataherald.py
index a085e23bb15..48f39c712dd 100644
--- a/libs/community/langchain_community/utilities/dataherald.py
+++ b/libs/community/langchain_community/utilities/dataherald.py
@@ -26,7 +26,7 @@ class DataheraldAPIWrapper(BaseModel):
 
         extra = Extra.forbid
 
-    @root_validator()
+    @root_validator(pre=True)
     def validate_environment(cls, values: Dict) -> Dict:
         """Validate that api key and python package exists in environment."""
         dataherald_api_key = get_from_dict_or_env(
diff --git a/libs/community/langchain_community/utilities/duckduckgo_search.py b/libs/community/langchain_community/utilities/duckduckgo_search.py
index 2797f385d85..af109aa1beb 100644
--- a/libs/community/langchain_community/utilities/duckduckgo_search.py
+++ b/libs/community/langchain_community/utilities/duckduckgo_search.py
@@ -41,7 +41,7 @@ class DuckDuckGoSearchAPIWrapper(BaseModel):
 
         extra = Extra.forbid
 
-    @root_validator()
+    @root_validator(pre=True)
     def validate_environment(cls, values: Dict) -> Dict:
         """Validate that python package exists in environment."""
         try:
diff --git a/libs/community/langchain_community/utilities/github.py b/libs/community/langchain_community/utilities/github.py
index de6cdaf97bb..a437284087f 100644
--- a/libs/community/langchain_community/utilities/github.py
+++ b/libs/community/langchain_community/utilities/github.py
@@ -42,7 +42,7 @@ class GitHubAPIWrapper(BaseModel):
 
         extra = Extra.forbid
 
-    @root_validator()
+    @root_validator(pre=True)
     def validate_environment(cls, values: Dict) -> Dict:
         """Validate that api key and python package exists in environment."""
         github_repository = get_from_dict_or_env(
diff --git a/libs/community/langchain_community/utilities/gitlab.py b/libs/community/langchain_community/utilities/gitlab.py
index d17c1b8e72a..d7d7c2a9d7c 100644
--- a/libs/community/langchain_community/utilities/gitlab.py
+++ b/libs/community/langchain_community/utilities/gitlab.py
@@ -34,7 +34,7 @@ class GitLabAPIWrapper(BaseModel):
 
         extra = Extra.forbid
 
-    @root_validator()
+    @root_validator(pre=True)
     def validate_environment(cls, values: Dict) -> Dict:
         """Validate that api key and python package exists in environment."""
 
diff --git a/libs/community/langchain_community/utilities/golden_query.py b/libs/community/langchain_community/utilities/golden_query.py
index baeb3ddf96a..6ec5c6a69a3 100644
--- a/libs/community/langchain_community/utilities/golden_query.py
+++ b/libs/community/langchain_community/utilities/golden_query.py
@@ -28,7 +28,7 @@ class GoldenQueryAPIWrapper(BaseModel):
 
         extra = Extra.forbid
 
-    @root_validator()
+    @root_validator(pre=True)
     def validate_environment(cls, values: Dict) -> Dict:
         """Validate that api key and python package exists in environment."""
         golden_api_key = get_from_dict_or_env(
diff --git a/libs/community/langchain_community/utilities/google_finance.py b/libs/community/langchain_community/utilities/google_finance.py
index 95e5b0c2e15..a93ff38edcf 100644
--- a/libs/community/langchain_community/utilities/google_finance.py
+++ b/libs/community/langchain_community/utilities/google_finance.py
@@ -29,7 +29,7 @@ class GoogleFinanceAPIWrapper(BaseModel):
 
         extra = Extra.forbid
 
-    @root_validator()
+    @root_validator(pre=True)
     def validate_environment(cls, values: Dict) -> Dict:
         """Validate that api key and python package exists in environment."""
         values["serp_api_key"] = convert_to_secret_str(
diff --git a/libs/community/langchain_community/utilities/google_jobs.py b/libs/community/langchain_community/utilities/google_jobs.py
index d532cbffd02..b495ab8978d 100644
--- a/libs/community/langchain_community/utilities/google_jobs.py
+++ b/libs/community/langchain_community/utilities/google_jobs.py
@@ -29,7 +29,7 @@ class GoogleJobsAPIWrapper(BaseModel):
 
         extra = Extra.forbid
 
-    @root_validator()
+    @root_validator(pre=True)
     def validate_environment(cls, values: Dict) -> Dict:
         """Validate that api key and python package exists in environment."""
         values["serp_api_key"] = convert_to_secret_str(
diff --git a/libs/community/langchain_community/utilities/google_lens.py b/libs/community/langchain_community/utilities/google_lens.py
index 98b796fddad..a515b7fb89c 100644
--- a/libs/community/langchain_community/utilities/google_lens.py
+++ b/libs/community/langchain_community/utilities/google_lens.py
@@ -35,7 +35,7 @@ class GoogleLensAPIWrapper(BaseModel):
 
         extra = Extra.forbid
 
-    @root_validator()
+    @root_validator(pre=True)
     def validate_environment(cls, values: Dict) -> Dict:
         """Validate that api key and python package exists in environment."""
         values["serp_api_key"] = convert_to_secret_str(
diff --git a/libs/community/langchain_community/utilities/google_places_api.py b/libs/community/langchain_community/utilities/google_places_api.py
index c5c8d0f6190..a6ce9f957b3 100644
--- a/libs/community/langchain_community/utilities/google_places_api.py
+++ b/libs/community/langchain_community/utilities/google_places_api.py
@@ -43,7 +43,7 @@ class GooglePlacesAPIWrapper(BaseModel):
         extra = Extra.forbid
         arbitrary_types_allowed = True
 
-    @root_validator()
+    @root_validator(pre=True)
     def validate_environment(cls, values: Dict) -> Dict:
         """Validate that api key is in your environment variable."""
         gplaces_api_key = get_from_dict_or_env(
diff --git a/libs/community/langchain_community/utilities/google_scholar.py b/libs/community/langchain_community/utilities/google_scholar.py
index 49b2677d7f7..18a402df669 100644
--- a/libs/community/langchain_community/utilities/google_scholar.py
+++ b/libs/community/langchain_community/utilities/google_scholar.py
@@ -50,7 +50,7 @@ class GoogleScholarAPIWrapper(BaseModel):
 
         extra = Extra.forbid
 
-    @root_validator()
+    @root_validator(pre=True)
     def validate_environment(cls, values: Dict) -> Dict:
         """Validate that api key and python package exists in environment."""
         serp_api_key = get_from_dict_or_env(values, "serp_api_key", "SERP_API_KEY")
diff --git a/libs/community/langchain_community/utilities/google_search.py b/libs/community/langchain_community/utilities/google_search.py
index 68eae777123..e8140aaef50 100644
--- a/libs/community/langchain_community/utilities/google_search.py
+++ b/libs/community/langchain_community/utilities/google_search.py
@@ -69,7 +69,7 @@ class GoogleSearchAPIWrapper(BaseModel):
         res = cse.list(q=search_term, cx=self.google_cse_id, **kwargs).execute()
         return res.get("items", [])
 
-    @root_validator()
+    @root_validator(pre=True)
     def validate_environment(cls, values: Dict) -> Dict:
         """Validate that api key and python package exists in environment."""
         google_api_key = get_from_dict_or_env(
diff --git a/libs/community/langchain_community/utilities/google_serper.py b/libs/community/langchain_community/utilities/google_serper.py
index 6701b56e584..348e62d95f3 100644
--- a/libs/community/langchain_community/utilities/google_serper.py
+++ b/libs/community/langchain_community/utilities/google_serper.py
@@ -46,7 +46,7 @@ class GoogleSerperAPIWrapper(BaseModel):
 
         arbitrary_types_allowed = True
 
-    @root_validator()
+    @root_validator(pre=True)
     def validate_environment(cls, values: Dict) -> Dict:
         """Validate that api key exists in environment."""
         serper_api_key = get_from_dict_or_env(
diff --git a/libs/community/langchain_community/utilities/google_trends.py b/libs/community/langchain_community/utilities/google_trends.py
index 59df3448560..14d9291a708 100644
--- a/libs/community/langchain_community/utilities/google_trends.py
+++ b/libs/community/langchain_community/utilities/google_trends.py
@@ -33,7 +33,7 @@ class GoogleTrendsAPIWrapper(BaseModel):
 
         extra = Extra.forbid
 
-    @root_validator()
+    @root_validator(pre=True)
     def validate_environment(cls, values: Dict) -> Dict:
         """Validate that api key and python package exists in environment."""
         values["serp_api_key"] = convert_to_secret_str(
diff --git a/libs/community/langchain_community/utilities/jira.py b/libs/community/langchain_community/utilities/jira.py
index 334f06622fc..c03d3badfea 100644
--- a/libs/community/langchain_community/utilities/jira.py
+++ b/libs/community/langchain_community/utilities/jira.py
@@ -21,7 +21,7 @@ class JiraAPIWrapper(BaseModel):
 
         extra = Extra.forbid
 
-    @root_validator()
+    @root_validator(pre=True)
     def validate_environment(cls, values: Dict) -> Dict:
         """Validate that api key and python package exists in environment."""
         jira_username = get_from_dict_or_env(
diff --git a/libs/community/langchain_community/utilities/merriam_webster.py b/libs/community/langchain_community/utilities/merriam_webster.py
index 4904d01faa2..31b6571ec7b 100644
--- a/libs/community/langchain_community/utilities/merriam_webster.py
+++ b/libs/community/langchain_community/utilities/merriam_webster.py
@@ -32,7 +32,7 @@ class MerriamWebsterAPIWrapper(BaseModel):
 
         extra = Extra.forbid
 
-    @root_validator()
+    @root_validator(pre=True)
     def validate_environment(cls, values: Dict) -> Dict:
         """Validate that api key exists in environment."""
         merriam_webster_api_key = get_from_dict_or_env(
diff --git a/libs/community/langchain_community/utilities/outline.py b/libs/community/langchain_community/utilities/outline.py
index b9a4e3cad4d..c10b3e1cc5d 100644
--- a/libs/community/langchain_community/utilities/outline.py
+++ b/libs/community/langchain_community/utilities/outline.py
@@ -27,7 +27,7 @@ class OutlineAPIWrapper(BaseModel):
     outline_api_key: Optional[str] = None
     outline_search_endpoint: str = "/api/documents.search"
 
-    @root_validator()
+    @root_validator(pre=True)
     def validate_environment(cls, values: Dict) -> Dict:
         """Validate that instance url and api key exists in environment."""
         outline_instance_url = get_from_dict_or_env(
diff --git a/libs/community/langchain_community/utilities/polygon.py b/libs/community/langchain_community/utilities/polygon.py
index e98d772e364..906a34e6d44 100644
--- a/libs/community/langchain_community/utilities/polygon.py
+++ b/libs/community/langchain_community/utilities/polygon.py
@@ -17,7 +17,7 @@ class PolygonAPIWrapper(BaseModel):
 
     polygon_api_key: Optional[str] = None
 
-    @root_validator()
+    @root_validator(pre=True)
     def validate_environment(cls, values: Dict) -> Dict:
         """Validate that api key in environment."""
         polygon_api_key = get_from_dict_or_env(
diff --git a/libs/community/langchain_community/utilities/pubmed.py b/libs/community/langchain_community/utilities/pubmed.py
index 8b67f259735..ab541b02b31 100644
--- a/libs/community/langchain_community/utilities/pubmed.py
+++ b/libs/community/langchain_community/utilities/pubmed.py
@@ -48,7 +48,7 @@ class PubMedAPIWrapper(BaseModel):
     doc_content_chars_max: int = 2000
     email: str = "your_email@example.com"
 
-    @root_validator()
+    @root_validator(pre=True)
     def validate_environment(cls, values: Dict) -> Dict:
         """Validate that the python package exists in environment."""
         try:
diff --git a/libs/community/langchain_community/utilities/reddit_search.py b/libs/community/langchain_community/utilities/reddit_search.py
index e17971b1b2c..6192c033b36 100644
--- a/libs/community/langchain_community/utilities/reddit_search.py
+++ b/libs/community/langchain_community/utilities/reddit_search.py
@@ -30,7 +30,7 @@ class RedditSearchAPIWrapper(BaseModel):
     reddit_client_secret: Optional[str]
     reddit_user_agent: Optional[str]
 
-    @root_validator()
+    @root_validator(pre=True)
     def validate_environment(cls, values: Dict) -> Dict:
         """Validate that the API ID, secret and user agent exists in environment
         and check that praw module is present.
diff --git a/libs/community/langchain_community/utilities/rememberizer.py b/libs/community/langchain_community/utilities/rememberizer.py
index 4f46317da95..aaaa0f20414 100644
--- a/libs/community/langchain_community/utilities/rememberizer.py
+++ b/libs/community/langchain_community/utilities/rememberizer.py
@@ -13,7 +13,7 @@ class RememberizerAPIWrapper(BaseModel):
     top_k_results: int = 10
     rememberizer_api_key: Optional[str] = None
 
-    @root_validator()
+    @root_validator(pre=True)
     def validate_environment(cls, values: Dict) -> Dict:
         """Validate that api key in environment."""
         rememberizer_api_key = get_from_dict_or_env(
diff --git a/libs/community/langchain_community/utilities/searchapi.py b/libs/community/langchain_community/utilities/searchapi.py
index 3934b59d0ed..ea6f9125ff0 100644
--- a/libs/community/langchain_community/utilities/searchapi.py
+++ b/libs/community/langchain_community/utilities/searchapi.py
@@ -32,7 +32,7 @@ class SearchApiAPIWrapper(BaseModel):
 
         arbitrary_types_allowed = True
 
-    @root_validator()
+    @root_validator(pre=True)
     def validate_environment(cls, values: Dict) -> Dict:
         """Validate that API key exists in environment."""
         searchapi_api_key = get_from_dict_or_env(
diff --git a/libs/community/langchain_community/utilities/searx_search.py b/libs/community/langchain_community/utilities/searx_search.py
index 0ddbf738c08..1387e907fad 100644
--- a/libs/community/langchain_community/utilities/searx_search.py
+++ b/libs/community/langchain_community/utilities/searx_search.py
@@ -229,10 +229,10 @@ class SearxSearchWrapper(BaseModel):
 
         return v
 
-    @root_validator()
+    @root_validator(pre=True)
     def validate_params(cls, values: Dict) -> Dict:
         """Validate that custom searx params are merged with default ones."""
-        user_params = values["params"]
+        user_params = values.get("params", {})
         default = _get_default_params()
         values["params"] = {**default, **user_params}
 
diff --git a/libs/community/langchain_community/utilities/semanticscholar.py b/libs/community/langchain_community/utilities/semanticscholar.py
index 7e9f03876e3..bfd9ef2c64d 100644
--- a/libs/community/langchain_community/utilities/semanticscholar.py
+++ b/libs/community/langchain_community/utilities/semanticscholar.py
@@ -50,7 +50,7 @@ class SemanticScholarAPIWrapper(BaseModel):
         "externalIds",
     ]
 
-    @root_validator()
+    @root_validator(pre=True)
     def validate_environment(cls, values: Dict) -> Dict:
         """Validate that the python package exists in environment."""
         try:
diff --git a/libs/community/langchain_community/utilities/serpapi.py b/libs/community/langchain_community/utilities/serpapi.py
index 35ecf38de38..53d818eeff5 100644
--- a/libs/community/langchain_community/utilities/serpapi.py
+++ b/libs/community/langchain_community/utilities/serpapi.py
@@ -57,7 +57,7 @@ class SerpAPIWrapper(BaseModel):
         extra = Extra.forbid
         arbitrary_types_allowed = True
 
-    @root_validator()
+    @root_validator(pre=True)
     def validate_environment(cls, values: Dict) -> Dict:
         """Validate that api key and python package exists in environment."""
         serpapi_api_key = get_from_dict_or_env(
diff --git a/libs/community/langchain_community/utilities/stackexchange.py b/libs/community/langchain_community/utilities/stackexchange.py
index 6ad72b42541..777022cdc82 100644
--- a/libs/community/langchain_community/utilities/stackexchange.py
+++ b/libs/community/langchain_community/utilities/stackexchange.py
@@ -19,7 +19,7 @@ class StackExchangeAPIWrapper(BaseModel):
     result_separator: str = "\n\n"
     """Separator between question,answer pairs."""
 
-    @root_validator()
+    @root_validator(pre=True)
     def validate_environment(cls, values: Dict) -> Dict:
         """Validate that the required Python package exists."""
         try:
diff --git a/libs/community/langchain_community/utilities/tensorflow_datasets.py b/libs/community/langchain_community/utilities/tensorflow_datasets.py
index 8f96c9c0c29..197c2f4c0f8 100644
--- a/libs/community/langchain_community/utilities/tensorflow_datasets.py
+++ b/libs/community/langchain_community/utilities/tensorflow_datasets.py
@@ -60,7 +60,7 @@ class TensorflowDatasets(BaseModel):
     sample_to_document_function: Optional[Callable[[Dict], Document]] = None
     dataset: Any  #: :meta private:
 
-    @root_validator()
+    @root_validator(pre=True)
     def validate_environment(cls, values: Dict) -> Dict:
         """Validate that the python package exists in environment."""
         try:
diff --git a/libs/community/langchain_community/utilities/twilio.py b/libs/community/langchain_community/utilities/twilio.py
index d1c3fce5827..563db6ef889 100644
--- a/libs/community/langchain_community/utilities/twilio.py
+++ b/libs/community/langchain_community/utilities/twilio.py
@@ -48,7 +48,7 @@ class TwilioAPIWrapper(BaseModel):
         extra = Extra.forbid
         arbitrary_types_allowed = False
 
-    @root_validator()
+    @root_validator(pre=True)
     def validate_environment(cls, values: Dict) -> Dict:
         """Validate that api key and python package exists in environment."""
         try:
diff --git a/libs/community/langchain_community/utilities/wikidata.py b/libs/community/langchain_community/utilities/wikidata.py
index c31009d78d6..8ea4122d915 100644
--- a/libs/community/langchain_community/utilities/wikidata.py
+++ b/libs/community/langchain_community/utilities/wikidata.py
@@ -92,7 +92,7 @@ class WikidataAPIWrapper(BaseModel):
     wikidata_props: List[str] = DEFAULT_PROPERTIES
     lang: str = DEFAULT_LANG_CODE
 
-    @root_validator()
+    @root_validator(pre=True)
     def validate_environment(cls, values: Dict) -> Dict:
         """Validate that the python package exists in environment."""
         try:
diff --git a/libs/community/langchain_community/utilities/wikipedia.py b/libs/community/langchain_community/utilities/wikipedia.py
index 3755368efce..4f0e4684d5e 100644
--- a/libs/community/langchain_community/utilities/wikipedia.py
+++ b/libs/community/langchain_community/utilities/wikipedia.py
@@ -26,13 +26,14 @@ class WikipediaAPIWrapper(BaseModel):
     load_all_available_meta: bool = False
     doc_content_chars_max: int = 4000
 
-    @root_validator()
+    @root_validator(pre=True)
     def validate_environment(cls, values: Dict) -> Dict:
         """Validate that the python package exists in environment."""
         try:
             import wikipedia
 
-            wikipedia.set_lang(values["lang"])
+            lang = values.get("lang", "en")
+            wikipedia.set_lang(lang)
             values["wiki_client"] = wikipedia
         except ImportError:
             raise ImportError(
diff --git a/libs/community/langchain_community/utilities/wolfram_alpha.py b/libs/community/langchain_community/utilities/wolfram_alpha.py
index 079453a0cb3..0c76ed159da 100644
--- a/libs/community/langchain_community/utilities/wolfram_alpha.py
+++ b/libs/community/langchain_community/utilities/wolfram_alpha.py
@@ -25,7 +25,7 @@ class WolframAlphaAPIWrapper(BaseModel):
 
         extra = Extra.forbid
 
-    @root_validator()
+    @root_validator(pre=True)
     def validate_environment(cls, values: Dict) -> Dict:
         """Validate that api key and python package exists in environment."""
         wolfram_alpha_appid = get_from_dict_or_env(