I have a Craft 2 install that's been working fine until recently when the admin page is giving an error:
file_put_contents(): Exclusive locks are not supported for this stream
The front end is fine.
It seems (according to https://docs.craftcms.com/v3/config/config-settings.html) that NFS filesystems do not like Exclusive Locks, and the host uses NFS (the webserver the site is on connects to a backend filer via NFS to read the actual webfiles)
so I have tried changing
so that useFileLock is set to 'false' but this hasn't changed anything.
Thanks in advance!