Merge pull request #1415 from feitianbubu/pr/fix-relayError-nil

fix: avoid relayError nil panic

types/error.go

@@ -105,16 +105,19 @@ func (e *NewAPIError) SetMessage(message string) {
 func (e *NewAPIError) ToOpenAIError() OpenAIError {
 	switch e.ErrorType {
 	case ErrorTypeOpenAIError:
-		return e.RelayError.(OpenAIError)
+		if openAIError, ok := e.RelayError.(OpenAIError); ok {
+			return openAIError
+		}
 	case ErrorTypeClaudeError:
-		claudeError := e.RelayError.(ClaudeError)
+		if claudeError, ok := e.RelayError.(ClaudeError); ok {
 			return OpenAIError{
 				Message: e.Error(),
 				Type:    claudeError.Type,
 				Param:   "",
 				Code:    e.errorCode,
 			}
-	default:
+		}
+	}
 	return OpenAIError{
 		Message: e.Error(),
 		Type:    string(e.ErrorType),
@@ -122,7 +125,6 @@ func (e *NewAPIError) ToOpenAIError() OpenAIError {
 		Code:    e.errorCode,
 	}
 }
-}
 
 func (e *NewAPIError) ToClaudeError() ClaudeError {
 	switch e.ErrorType {
@@ -163,7 +165,10 @@ func NewOpenAIError(err error, errorCode ErrorCode, statusCode int) *NewAPIError
 func NewErrorWithStatusCode(err error, errorCode ErrorCode, statusCode int) *NewAPIError {
 	return &NewAPIError{
 		Err: err,
-		RelayError: nil,
+		RelayError: OpenAIError{
+			Message: err.Error(),
+			Type:    string(errorCode),
+		},
 		ErrorType:  ErrorTypeNewAPIError,
 		StatusCode: statusCode,
 		errorCode:  errorCode,