Fix basepool & 优化 repo

internal/errors/api_error.go

@@ -44,6 +44,7 @@ var (
 	ErrGroupNotFound      = &APIError{HTTPStatus: http.StatusNotFound, Code: "GROUP_NOT_FOUND", Message: "The specified group was not found."}
 	ErrPermissionDenied   = &APIError{HTTPStatus: http.StatusForbidden, Code: "PERMISSION_DENIED", Message: "Permission denied for this operation."}
 	ErrConfigurationError = &APIError{HTTPStatus: http.StatusInternalServerError, Code: "CONFIGURATION_ERROR", Message: "A configuration error prevents this request from being processed."}
+	ErrProxyNotAvailable  = &APIError{HTTPStatus: http.StatusNotFound, Code: "PROXY_ERROR", Message: "Required proxy is not available for this request."}
 
 	ErrStateConflictMasterRevoked = &APIError{HTTPStatus: http.StatusConflict, Code: "STATE_CONFLICT_MASTER_REVOKED", Message: "Cannot perform this operation on a revoked key."}
 	ErrNotFound                   = &APIError{HTTPStatus: http.StatusNotFound, Code: "NOT_FOUND", Message: "Resource not found"}