TYPO3 Exception 1397836158

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.

To add your experience, click “Edit on GitHub” above and follow the “Edit on GitHub” workflow. Also check out our tip on Coding Style and reST.

No or invalid extension key “…” given.

  • Search for variable $extensionKey and replace with the extension key as $_EXTKEY or string myExtension
  • Try not to use $_EXTKEY in dynamicConfigFiles or otherwise included TCA snippets
  • Check https://forge.typo3.org/issues/59033

You may have to clear the cache in install tool (See Important actions).

https://docs.typo3.org/typo3cms/InstallationGuide/Upgrade/RemoveTemporaryCacheFiles/Index.html