TYPO3 Exception 1438594406

Note

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.

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No columns definition in TCA table

On possible cause for this is the use of old ext_tables.php/TCA configuration. Please see https://docs.typo3.org/c/typo3/cms-core/master/en-us/Changelog/7.6/Index.html for the changes in TYPO3. Also, the TCA file must return the array, not only declare it, as would work before.