WordPress crashes when updating plugins

My wordpress site has begun crashing every time I attempt a plugin update, with the following unhelpful messages

Each time I attempt an update of any of the 3 plugins that require updating, I receive the messages above, and my site crashes. After crashing, the wordpress instance needs to be restarted.

I’ve tried turning on WP_DEBUG, but nothing of significance appears in the wp-content/debug.log file.

I have access to the host, and the volume/s for the docker container that’s hosting the wordpress instance (i.e. unfettered access), so I can make any changes required, but I haven’t encountered this issue before.

Any assistance would be much appreciated.