Hello @Hube2, and thank you for your response.
I have to admit that I did not check if any functionality was missing (despite the automatic update). As everything was working well on localhost and I have this red error online, I thought that something was missing…
I just checked wis a template using ACF data in JSON, with tab, repeater, map, and it seems to work well… I feel a bit silly :-/
So everything seems functional except the auto-update. This is far less urgent (but remains a bug anyway).
Thank you again.