Your software Mautic 4.1.10
My PHP version is :8.3.17-nmm1
Updating/Installing Errors
Prerequisite check for update to Mautic 5 fails even though required PHP version is present
One or more errors occurred while checking your environment prior to updating Mautic:
Your PHP version is too old or too new for Mautic to update. You are currently running PHP 8.3.17-nmm1. Please make sure that your version is between 8.1.0 and 8.3.99
These errors are showing in the Mautic log :
Your problem
This Version should be supported per Documentation, I have the impression that the Version Suffix -nmm1 is causing the issue.
Would be interested to understand how this is handled and if there is a way to modify behaviour (e.g. the version check)