Update abstract_graph.py

fix: Incorrect API Key Error with OpenAI Proxy

Author: shubihu

scrapegraphai/graphs/abstract_graph.py

@@ -298,7 +298,7 @@ def _create_default_embedder(self, llm_config=None) -> object:
                 google_api_key=llm_config["api_key"], model="models/embedding-001"
             )
         if isinstance(self.llm_model, OpenAI):
-            return OpenAIEmbeddings(api_key=self.llm_model.openai_api_key)
+            return OpenAIEmbeddings(api_key=self.llm_model.openai_api_key, base_url=self.llm_model.openai_api_base)
         elif isinstance(self.llm_model, DeepSeek):
             return OpenAIEmbeddings(api_key=self.llm_model.openai_api_key)   
         elif isinstance(self.llm_model, AzureOpenAIEmbeddings):
@@ -407,4 +407,4 @@ def run(self) -> str:
         """
         Abstract method to execute the graph and return the result.
         """
-        pass
+        pass