TYPO3 Exception 1439552058¶

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. (See How to get your TYPO3 Slack account.)

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.

The extension "..." has invalid version constraints in depends section. Extension key is missing!¶

To fix this, go to your TYPO3 Installation directory, go to typo3conf/ext/... and edit ext_emconf.php and delete the line in the depends section, which neither contains any extension key nor any version, but only an empty array key with empty array value (' ' => ' ',). In my case this was line 31. -> Save the file.
After this go to your TYPO3 backend, go to the extensions subcategory and enable the extension by clicking the box in front of this entry.
Refresh your page, and you should be fine.