Steps to reproduce the issue

1. Use PHP8.1.5
2. Login screen at .../administrator/index.php
3. this 2 informations are shown (Error Reporting is 'Maximum')

Warning
: Trying to access array offset on value of type null in
.../libraries/src/Updater/Updater.php
on line
347


Deprecated
: version_compare(): Passing null to parameter #2 ($version2) of type string is deprecated in
.../libraries/src/Updater/Updater.php
on line
347

Expected result

No Warnings are shown.

Actual result

See above.

System information (as much as possible)

Additional comments

On PHP 7.4.29 this warnings aren't shown.