[NSFW] FrmEntriesController.php

Hello support team,

Unfortunately, the form entries are no longer displayed for newly created accounts.

There are two Fatal Erros:

Uncaught Error: [] operator not supported for strings

and

wp-content/plugins/formidable/classes/controllers/FrmEntriesController.php:376

Formidable Forms: 5.5.3.1
Formidable Forms Pro: 5.5.3
Formidable Visual Views: 5.3.3

We use Ultimatemember to manage the user roles.

The page I need help with: [log in to see the link]