Похоже работает

backend/src/api/routes/llm.py

@@ -143,6 +143,15 @@ async def test_connection(
         raise HTTPException(status_code=404, detail="Provider not found")
     
     api_key = service.get_decrypted_api_key(provider_id)
+    
+    # Check if API key was successfully decrypted
+    if not api_key:
+        logger.error(f"[llm_routes][test_connection] Failed to decrypt API key for provider {provider_id}")
+        raise HTTPException(
+            status_code=500,
+            detail="Failed to decrypt API key. The provider may have been encrypted with a different encryption key. Please update the provider with a new API key."
+        )
+    
     client = LLMClient(
         provider_type=LLMProviderType(db_provider.provider_type),
         api_key=api_key,
@@ -173,6 +182,13 @@ async def test_provider_config(
     from ...plugins.llm_analysis.service import LLMClient
     logger.info(f"[llm_routes][test_provider_config][Action] Testing config for {config.name}")
     
+    # Check if API key is provided
+    if not config.api_key or config.api_key == "********":
+        raise HTTPException(
+            status_code=400,
+            detail="API key is required for testing connection"
+        )
+    
     client = LLMClient(
         provider_type=config.provider_type,
         api_key=config.api_key,