Can't open a saved file

[K1dCharlemagne]

when opening a saved file, get this message:
"Error rendering mind map. Error: Cannot use "in" operator to search for "root" in {"root":{"id":0,"description": "project development etc...."}

Steps to reproduce the behavior:

1. Create a file
2. Save
3. close
4. Open

• Win 10 Pro

[K1dCharlemagne]

It seems to be related to linking a PNG image, works with JPG