Change how strings are saved in DatasetJsonUtility.cs

com.unity.perception/Editor/Pyrception/PyrceptionInstaller.cs

     [MenuItem("Window/Pyrception/Run")]
     static void RunPyrception()
     {
+        UnityEngine.Debug.Log(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData));
+
         UnityEngine.Debug.Log(PlayerPrefs.GetInt("currentProcessId"));
         if (RestartBrowser())
             return;

com.unity.perception/Runtime/GroundTruth/DatasetJsonUtility.cs

                 case double v:
                     return new JValue(v);
                 case string v:
-                    return new JValue($"\"{v}\"");
+                    return new JValue(v);
                 case uint v:
                     return new JValue(v);
             }