I backed up a localhost website and restored it on my online server.
During the process of restoring with kickstart.php, an error_log file was created with the following deprecation warnings:
[20-Jul-2023 17:08:03 UTC] PHP Deprecated: Creation of dynamic property AKUnarchiverJPA::$hasRun is deprecated in /home/cynyxen/public_html/kickstart.php on line 930
[20-Jul-2023 17:08:04 UTC] PHP Deprecated: Creation of dynamic property AKUnarchiverJPA::$hasRun is deprecated in /home/cynyxen/public_html/kickstart.php on line 8355
[20-Jul-2023 17:08:08 UTC] PHP Deprecated: Creation of dynamic property AKUnarchiverJPA::$hasRun is deprecated in /home/cynyxen/public_html/kickstart.php on line 8355
[20-Jul-2023 17:08:09 UTC] PHP Deprecated: Creation of dynamic property AKUnarchiverJPA::$hasRun is deprecated in /home/cynyxen/public_html/kickstart.php on line 8355
[20-Jul-2023 17:08:51 UTC] PHP Deprecated: Creation of dynamic property AKUnarchiverJPA::$hasRun is deprecated in /home/cynyxen/public_html/kickstart.php on line 8355
[20-Jul-2023 17:08:51 UTC] PHP Deprecated: Creation of dynamic property AKUnarchiverJPA::$hasRun is deprecated in /home/cynyxen/public_html/kickstart.php on line 8355
The restoration went through with no problems and the website functions alright it has been successful.
I only submit these so that you may deal with them before the deprecations become removals in a future PHP version.