fix error msg format issue (#2715)

Co-authored-by: jyong <jyong@dify.ai>

api/core/model_runtime/model_providers/baichuan/text_embedding/text_embedding.py

@@ -108,7 +108,7 @@ class BaichuanTextEmbeddingModel(TextEmbeddingModel):
         try:
             response = post(url, headers=headers, data=dumps(data))
         except Exception as e:
-            raise InvokeConnectionError(e)
+            raise InvokeConnectionError(str(e))
         
         if response.status_code != 200:
             try:

api/core/model_runtime/model_providers/jina/text_embedding/text_embedding.py

@@ -57,7 +57,7 @@ class JinaTextEmbeddingModel(TextEmbeddingModel):
         try:
             response = post(url, headers=headers, data=dumps(data))
         except Exception as e:
-            raise InvokeConnectionError(e)
+            raise InvokeConnectionError(str(e))
         
         if response.status_code != 200:
             try:

api/core/model_runtime/model_providers/localai/text_embedding/text_embedding.py

@@ -59,7 +59,7 @@ class LocalAITextEmbeddingModel(TextEmbeddingModel):
         try:
             response = post(join(url, 'embeddings'), headers=headers, data=dumps(data), timeout=10)
         except Exception as e:
-            raise InvokeConnectionError(e)
+            raise InvokeConnectionError(str(e))
         
         if response.status_code != 200:
             try:

api/core/model_runtime/model_providers/minimax/text_embedding/text_embedding.py

@@ -65,7 +65,7 @@ class MinimaxTextEmbeddingModel(TextEmbeddingModel):
         try:
             response = post(url, headers=headers, data=dumps(data))
         except Exception as e:
-            raise InvokeConnectionError(e)
+            raise InvokeConnectionError(str(e))
         
         if response.status_code != 200:
             raise InvokeServerUnavailableError(response.text)

api/core/model_runtime/model_providers/openllm/text_embedding/text_embedding.py

@@ -53,7 +53,7 @@ class OpenLLMTextEmbeddingModel(TextEmbeddingModel):
             # cloud not connect to the server
             raise InvokeAuthorizationError(f"Invalid server URL: {e}")
         except Exception as e:
-            raise InvokeConnectionError(e)
+            raise InvokeConnectionError(str(e))
         
         if response.status_code != 200:
             if response.status_code == 400: