Merge pull request #492 from Arthur-Milchior/print_json_decode_error

print json decode error message

qt/aqt/addons.py

@@ -252,7 +252,8 @@ class AddonManager:
         try:
             with open(path, encoding="utf8") as f:
                 return json.load(f)
-        except:
+        except json.JSONDecodeError as e:
+            print(f"json error in add-on {dir}:\n{e}")
             return dict()
 
     # in new code, use write_addon_meta() instead