One of my .drawio file won't open anymore

[Sand-jrd]

Hello,

I have this .drawio file in my Dropbox that I use very often for many little graphics I make.

Today, the file won’t open anymore. I don’t get much information from the error — it just says:
Failed to load resource: net::ERR_FAILED "Erreur undefined".

This file is “huge” because I use it as a sort of sandbox that I never clean, and it contains a lot of PNG images (it's 14MB). I can still open all the other .drawio files that are in my Dropbox, and there is (and was) enough space in my repo for the file to save and update correctly.

I can recover previous versions of the file from my Dropbox history, so nothing is really lost I hope, although I was wondering if it might be possible to recover the current version and if there’s any idea why this error happened.

Edit: Dropbox history did not fix the problem — the same error occurs when I try to open it. However, copying the file to another location and opening the copy instead of the original worked.
Edit 2: The copy also stopped working after I made changes, saved it, closed it, and tried to reopen it.

Thanks in advance,
Best

[davidjgraph]

Can you drop an email with a link to this at [email protected] please?