Upgrading
From v1.x (Filament v3) to v4.x (Filament v4)
With Filament v4 it has been recommended for plugin authors to have the users include their plugins views in a custom theme, rather than include the built css from the plugin. So for upgrades from Filament v3 to v4 it is recommended to follow these instructions from Filament Docs to set up a custom theme (if not already done) and add this to your theme/app css file
@source '../../../../vendor/defstudio/filament-searchable-input/resources/**/*.blade.php';