TYPO3 Core

How it can be reproduced:¶

1. Configure field in a TCA like
   'type' => 'select',
   'renderType' => 'selectCheckBox',

1. Switch to workspace and edit a live version (2018-05-29-source_record.png)
2. Save it -> exception (2018-05-29-exception.png)

How it can be fixed:¶

File: /typo3/sysext/core/Classes/DataHandling/DataHandler.php
Line: 6465
Current: $origValueArray = explode(',', $value);
Should be: $origValueArray = is_array($value) ? $value : explode(',', $value);