Hi Samuel,
Thank you for sharing the error message from the logs. However, we may need a bit more information to be able to suggest next steps.
A few questions for you:
What version of AtoM are you running - it is helpful to know the full version number listed in Admin > Settings. I am guessing it is 2.7.0 or higher, since I see you are using PHP 7.4... is that correct? Did you follow our recommended installation instructions for your version? If no, what have you changed (e.g. different operation system, database, PHP version, Elasticsearch version, webserver, etc)?
Does your installation meet the recommended minimum hardware requirements for your version? For example, in the 2.7 documentation we recommend:
- Processor: 2 vCPUs @ 2.3GHz
- Memory: 7GB
- Disk space (processing): 50GB at a minimum for AtoM’s core stack plus more storage would be required for supporting any substantial number of digital objects.
My initial theory is that your attempts to edit are somehow exhausting the system resources (perhaps the available memory?), causing the connection to be lost. If you have less than 4GB of RAM available, then my first suggestion is to increase the available memory to see if it resolves the issue.
Next - are you using Nginx as your web server? If yes, have you used the recommended configuration block from the installation docs? See:
And similarly, did you set up the recommended PHP pool for PHP-FPM? See:
Hopefully once we have more information, we can offer further suggestions.
Cheers,