TYPO3 Exception 1437656456¶
Below, the TYPO3 community may have provided additional information or solutions for this exception. However, these may or may not apply to your particular case. If you can provide more information, you should come back here and add your experience and solution steps to this issue once you have resolved it.
General TYPO3 troubleshooting tips can be found in the section “Troubleshooting” of the menu, and live support is available in the TYPO3 Slack channel #typo3-cms.
$uid must be positive integer, 0 given¶
Try updating to a newer Gridelements version.
Database not up to date¶
The issue was solved here by comparing the database with the specification (see Install Tool > Important Actions). Make sure your table definitions are the same as they are in the current database!