warning: Invalid argument supplied for foreach() in content_moderation/content_moderation.module on line 660

I got that error 13 times on page /admin/reports/updates/check after uploading and unpacking the new version 1.6

Checking if the issue resolves easily =>

update.php(0 updates), cron.php & /admin/content/node-settings/rebuild

=> Errors remain.

line 660: foreach($to_states as $to_state) {

out of:

 * Small helper for trigger and rules
 */
function _content_moderation_node_transition_matrix() {
  static $node_state_matrix = array();
  // chaching
  if(count($node_state_matrix) > 0) {
    return $node_state_matrix;
  }
  $states = _content_moderation_states();
  $types = _content_moderation_moderate_node_types();
  foreach($types as $type) {
    foreach($states as $from_state) {
        $to_states = _content_moderation_next_states($from_state,$type);
        // Values are translated.
        $to_states = array_keys($to_states);
        foreach($to_states as $to_state) {
          $node_state_matrix["{$type}_{$from_state}_{$to_state}"]= t("State of node type @type changed from '@from_state' to '@to_state'", array('@type' => $type, '@from_state' => $from_state, '@to_state' => $to_state));
        }
    }
  }
  
  foreach($to_states as $to_state) {
    $node_state_matrix["anynode_anystate_{$to_state}"]= t("State of any node type changed to '@to_state'", array('@to_state' => $to_state));
  }
  return $node_state_matrix;
}