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Nextcloud version (eg, 20.0.5): 28.0.3
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The issue you are facing:
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I am running the TrueNAS Catalog’s NextCloud. I was able to a folder on the TrueNAS Scale server that I am mounting from the variables through External Storage. i was unable to upload anything into this folder so was trying to figure out why. I unfortunately am no longer able to even view contents of that folder in NextCloud. here are some screenshots, hopefully these help explain the issue than my poor attempt:
www-data is part of group 950
Sorry had to use Word because of the new poster only 2 upload limitation.