Fatal error with Installer on php 8.4: doUpgrade must be compatible with ScriptedInstaller #43
Description
Failure on install under php 8.4 (verified in a vanilla ZC220/dev version).
PHP Fatal error: Declaration of ScriptedInstaller::doUpgrade(string $oldVersion = ''): bool must be compatible with Zencart\PluginSupport\ScriptedInstaller::doUpgrade($oldVersion): ?bool in ...\zc_plugins\InstantSearch\v4.0.3\Installer\ScriptedInstaller.php on line 27
since function doUpgrade is intended to be an internal method of \includes\classes\PluginSupport\ScriptedInstaller.php
It should use the other methods as indicated in the comments in that file.