Using version 1.7.3, Joomla 3.9.16 and PHP 7.3.16 give the following errors in the back end under Languages<Translations:
Notice: compact(): Undefined variable: class in C:\UwAmp\www\squick\sellacious\components\com_sellacious\models\fields\checkboxes.php on line 141
Notice: compact(): Undefined variable: required in C:\UwAmp\www\squick\sellacious\components\com_sellacious\models\fields\checkboxes.php on line 141
Notice: compact(): Undefined variable: autofocus in C:\UwAmp\www\squick\sellacious\components\com_sellacious\models\fields\checkboxes.php on line 141
These disappear with PHP 7.2.7, but Joomla is recommending 7.3. This has appeared in the front end at times as well. It appears that these 3 variable s have not been defined somewhere. Can you tell me where to define them to remove this error?