Many notice after update to PHP 7.4

Hello

The debug log returns many notices after we updated PHP to 7.4:

[25-Jun-2021 08:47:33 UTC] PHP Notice:  Undefined property: stdClass::$mapCategories in /var/www/site/web/app/plugins/wp-mapbox-gl-js/public/class-wp-mapbox-gl-js-public.php on line 135
[25-Jun-2021 08:47:33 UTC] PHP Notice:  Undefined index: mapOrigin in /var/www/site/web/app/plugins/wp-mapbox-gl-js/public/class-wp-mapbox-gl-js-public.php on line 136
[25-Jun-2021 08:47:33 UTC] PHP Notice:  Undefined property: stdClass::$preFillDirections in /var/www/site/web/app/plugins/wp-mapbox-gl-js/public/class-wp-mapbox-gl-js-public.php on line 136
[25-Jun-2021 08:47:33 UTC] PHP Notice:  Trying to get property 'origin' of non-object in /var/www/site/web/app/plugins/wp-mapbox-gl-js/public/class-wp-mapbox-gl-js-public.php on line 136
[25-Jun-2021 08:47:33 UTC] PHP Notice:  Undefined index: mapDestination in /var/www/site/web/app/plugins/wp-mapbox-gl-js/public/class-wp-mapbox-gl-js-public.php on line 137
[25-Jun-2021 08:47:33 UTC] PHP Notice:  Undefined property: stdClass::$preFillDirections in /var/www/site/web/app/plugins/wp-mapbox-gl-js/public/class-wp-mapbox-gl-js-public.php on line 137
[25-Jun-2021 08:47:33 UTC] PHP Notice:  Trying to get property 'destination' of non-object in /var/www/site/web/app/plugins/wp-mapbox-gl-js/public/class-wp-mapbox-gl-js-public.php on line 137
[25-Jun-2021 08:47:33 UTC] PHP Notice:  Undefined property: stdClass::$mapLayersFilter in /var/www/site/web/app/plugins/wp-mapbox-gl-js/public/class-wp-mapbox-gl-js-public.php on line 138
[25-Jun-2021 08:47:33 UTC] PHP Notice:  Undefined variable: scrollZoom in /var/www/site/web/app/plugins/wp-mapbox-gl-js/public/class-wp-mapbox-gl-js-public.php on line 150

How can we fix this?

Thanks
Aldo