PHP Warning: foreach() argument must be of type array|object, null given

Getting these warnings in debug.log

[18-Jan-2025 16:33:48 UTC] PHP Warning:  foreach() argument must be of type array|object, null given in .../wp-content/plugins/event-post/eventpost.php on line 798
[18-Jan-2025 16:33:48 UTC] PHP Warning:  Trying to access array offset on value of type null in .../wp-content/plugins/event-post/eventpost.php on line 808
[18-Jan-2025 16:33:48 UTC] PHP Warning:  Trying to access array offset on value of type null in .../wp-content/plugins/event-post/eventpost.php on line 809

Current code:

797: $maps = $this->maps;
798: foreach($maps as $m=>$map){
...
804: }
805: wp_add_inline_script('event-post', 'var EventPost = EventPost || {}; EventPost.front='.wp_json_encode(array(
806:	'imgpath' => plugins_url('/img/', __FILE__),
807:	'maptiles' => $maps,
808:	'defaulttile' => $this->settings['tile'],
809:	'zoom' => $this->settings['zoom'],
...
812:	)), 'before');

A fix could be similar to this:

$maps = $this->maps;
if ( !empty( $maps ) ) {
   foreach($maps as $m=>$map){
   ...
   }
   wp_add_inline_script('event-post', ...
      ...
      )), 'before');
}

Event post 5.9.8, WordPress 6.4.5