Many PHP Warnings on my settings page

Hello,

I get many PHP warnings on the settings page of the plugin. The setting options are no longer displayed and the map is no longer loaded. A few weeks ago it was working fine.

A reinstallation of the plugin did not help.
The version of PHP is 7.3.14.

It looks to me as if the settings can no longer be read. But why is that and how can I solve it? (If necessary I can make changes in MySQL)

PHP warnings:

Warning: array_replace_recursive(): Expected parameter 1 to be an array, null given in /var/www/***/***/wp-content/plugins/acf-openstreetmap-field/include/ACFFieldOpenstreetmap/Core/LeafletProviders.php on line 50

Warning: array_filter() expects parameter 1 to be array, null given in /var/www/***/***/wp-content/plugins/acf-openstreetmap-field/include/ACFFieldOpenstreetmap/Core/LeafletProviders.php on line 53

Warning: Invalid argument supplied for foreach() in /var/www/***/***/wp-content/plugins/acf-openstreetmap-field/include/ACFFieldOpenstreetmap/Settings/SettingsOpenStreetMap.php on line 565

Warning: array_replace_recursive(): Expected parameter 1 to be an array, null given in /var/www/***/***/wp-content/plugins/acf-openstreetmap-field/include/ACFFieldOpenstreetmap/Core/LeafletProviders.php on line 50

Warning: array_filter() expects parameter 1 to be array, null given in /var/www/***/***/wp-content/plugins/acf-openstreetmap-field/include/ACFFieldOpenstreetmap/Core/LeafletProviders.php on line 53

Warning: array_replace_recursive(): Expected parameter 1 to be an array, null given in /var/www/***/***/wp-content/plugins/acf-openstreetmap-field/include/ACFFieldOpenstreetmap/Core/LeafletProviders.php on line 50

Warning: array_filter() expects parameter 1 to be array, null given in /var/www/***/***/wp-content/plugins/acf-openstreetmap-field/include/ACFFieldOpenstreetmap/Core/LeafletProviders.php on line 53

Warning: array_replace_recursive(): Expected parameter 1 to be an array, null given in /var/www/***/***/wp-content/plugins/acf-openstreetmap-field/include/ACFFieldOpenstreetmap/Core/LeafletProviders.php on line 63

Warning: array_filter() expects parameter 1 to be array, null given in /var/www/***/***/wp-content/plugins/acf-openstreetmap-field/include/ACFFieldOpenstreetmap/Core/LeafletProviders.php on line 67

Warning: Invalid argument supplied for foreach() in /var/www/***/***/wp-content/plugins/acf-openstreetmap-field/include/ACFFieldOpenstreetmap/Core/LeafletProviders.php on line 69

Warning: Invalid argument supplied for foreach() in /var/www/***/***/wp-content/plugins/acf-openstreetmap-field/include/ACFFieldOpenstreetmap/Core/LeafletProviders.php on line 127

Warning: array_replace_recursive(): Expected parameter 1 to be an array, null given in /var/www/***/***/wp-content/plugins/acf-openstreetmap-field/include/ACFFieldOpenstreetmap/Core/LeafletProviders.php on line 50

Warning: array_filter() expects parameter 1 to be array, null given in /var/www/***/***/wp-content/plugins/acf-openstreetmap-field/include/ACFFieldOpenstreetmap/Core/LeafletProviders.php on line 53

Warning: array_replace_recursive(): Expected parameter 1 to be an array, null given in /var/www/***/***/wp-content/plugins/acf-openstreetmap-field/include/ACFFieldOpenstreetmap/Core/LeafletProviders.php on line 50

Warning: array_filter() expects parameter 1 to be array, null given in /var/www/***/***/wp-content/plugins/acf-openstreetmap-field/include/ACFFieldOpenstreetmap/Core/LeafletProviders.php on line 53

Warning: array_replace_recursive(): Expected parameter 1 to be an array, null given in /var/www/***/***/wp-content/plugins/acf-openstreetmap-field/include/ACFFieldOpenstreetmap/Core/LeafletProviders.php on line 63

Warning: array_filter() expects parameter 1 to be array, null given in /var/www/***/***/wp-content/plugins/acf-openstreetmap-field/include/ACFFieldOpenstreetmap/Core/LeafletProviders.php on line 67

Warning: Invalid argument supplied for foreach() in /var/www/***/***/wp-content/plugins/acf-openstreetmap-field/include/ACFFieldOpenstreetmap/Core/LeafletProviders.php on line 69

Warning: Invalid argument supplied for foreach() in /var/www/***/***/wp-content/plugins/acf-openstreetmap-field/include/ACFFieldOpenstreetmap/Core/LeafletProviders.php on line 127

 Warning: Invalid argument supplied for foreach() in /var/www/***/***/wp-content/plugins/acf-openstreetmap-field/include/ACFFieldOpenstreetmap/Settings/SettingsOpenStreetMap.php on line 95