PHP Warning: call_user_func_array() expects parameter 1 to be a valid callback, function 'mfbfw_scripts'

[babvla]

[lsapi:notice] Backend log: PHP Warning: call_user_func_array() expects parameter 1 to be a valid callback, function 'mfbfw_scripts' not found or invalid function name in /*/wp-includes/class-wp-hook.php on line 292\n

php 7.3.15