Flatpickr Locale Support.
Depending on your location, flatpickr will not have the expected support, to solve this kind of problem you can add it in the settings.
See an example: config/app.php is
'locale' => 'pt_BR',
Do this in the settings:
In this case, there is no support for pt_BR, so change locale pt_BR to pt
'plugins' => [ // ... 'flatpickr' => [ // ... 'locales' => [ 'pt_BR' => [ 'locale' => 'pt', 'dateFormat' => 'd/m/Y H:i', 'enableTime' => true, 'time_24hr' => true, ], ], ], ],