improving error message (#450)

Author: digaobarbosa

roboflow/adapters/rfapi.py

@@ -404,7 +404,9 @@ def save_annotation(
     if response.status_code not in (200, 409):
         raise _save_annotation_error(response)
     if response.status_code == 409:
-        if "already annotated" in responsejson.get("error", {}).get("message"):
+        err_obj = responsejson.get("error", {})
+        err_message = err_obj.get("message", "") if isinstance(err_obj, dict) else str(err_obj)
+        if "already annotated" in err_message:
             return {"warn": "already annotated"}
         else:
             raise _save_annotation_error(response)
@@ -472,9 +474,9 @@ def _save_annotation_error(response):
 
     if responsejson.get("error"):
         err_msg = responsejson["error"]
-        if err_msg.get("message"):
-            err_msg = err_msg["message"]
-        return AnnotationSaveError(err_msg, status_code=response.status_code)
+        if isinstance(err_msg, dict):
+            err_msg = err_msg.get("message", str(err_msg))
+        return AnnotationSaveError(str(err_msg), status_code=response.status_code)
 
     return AnnotationSaveError(str(responsejson), status_code=response.status_code)