@hube2 Fixed! I followed your debugging steps. I found that, because I’m also using Timber, the path wp-content/themes/my-theme/acf-json
wasn’t sufficient and that I actually need wp-content/themes/my-theme/theme/acf-json
as the path. That didn’t take me very long at all so thank you!
Thanks @hube2 I’ll find some time to try that in the next couple of days (I’ve run out of time this weekend!) Appreciate your help so far and I’ll report back.
Thanks @hube2 but I’m not using child themes, just one theme that all Multisite Subsites will use.
Regarding permissions, AFAIK everything is set correctly. 755 on the directory. I’m not having any other permission based issues with file uploads, plugin installs etc. File owner/group is www-data:1000
which is just fine for everything else.
I’m stumped!