Fix: llm completion exception breaks CodeActAgent (#3678)

* Catch exception and return finish action with an exception message in case of exception in llm completion

* Remove exception logs

* Raise llm response error for any exception in llm completion

* Raise LLMResponseError from async completion and async streaming completion as well

openhands/llm/llm.py

@@ -27,7 +27,7 @@ from tenacity import (
     wait_random_exponential,
 )
 
-from openhands.core.exceptions import UserCancelledError
+from openhands.core.exceptions import LLMResponseError, UserCancelledError
 from openhands.core.logger import llm_prompt_logger, llm_response_logger
 from openhands.core.logger import openhands_logger as logger
 from openhands.core.metrics import Metrics
@@ -410,7 +410,10 @@ class LLM:
 
         Check the complete documentation at https://litellm.vercel.app/docs/completion
         """
-        return self._completion
+        try:
+            return self._completion
+        except Exception as e:
+            raise LLMResponseError(e)
 
     @property
     def async_completion(self):
@@ -418,7 +421,10 @@ class LLM:
 
         Check the complete documentation at https://litellm.vercel.app/docs/providers/ollama#example-usage---streaming--acompletion
         """
-        return self._async_completion
+        try:
+            return self._async_completion
+        except Exception as e:
+            raise LLMResponseError(e)
 
     @property
     def async_streaming_completion(self):
@@ -426,7 +432,10 @@ class LLM:
 
         Check the complete documentation at https://litellm.vercel.app/docs/providers/ollama#example-usage---streaming--acompletion
         """
-        return self._async_streaming_completion
+        try:
+            return self._async_streaming_completion
+        except Exception as e:
+            raise LLMResponseError(e)
 
     def supports_vision(self):
         return litellm.supports_vision(self.config.model)