The issue is mute_on_start(). On migration a new column `
muteonstart` is added to the database, and it default value is set to false. But on existing instances, the value given is null (perhaps not all databases, but it has not been confirmed). Possible reasons could be

• Upgrade has been made and field created (or field created in the database, and upgrade not finished).
• The database metadata has not been updated
• Then the field is not queried in the get_from_instance_id() and the field is null

it is necessary to add a validation  statement in the instance.php file, function get_mute_on_start() to be able to access the recordings again.

One solution is:

public function get_mute_on_start(): bool {

  if ($this->get_instance_var('muteonstart') === null) return 0; else return $this->get_intance_var('muteonstart');

}

Another one is:

publicfunctionget_mute_on_start(): bool {

  returnboolval($this->get_instance_var('muteonstart'));

} 

To reproduce:
-Edit the value in the database on any instance. Set to null (to emulate the value after migration)