TYPO3 Exception 1441706370


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.

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Button “TYPO3CMSBackendTemplateComponentsButtonsLinkButton” is not valid

#1441706370: Button "TYPO3\CMS\Backend\Template\Components\Buttons\LinkButton" is not valid
 InvalidArgumentException thrown in file
 typo3_src/typo3/sysext/backend/Classes/Template/Components/ButtonBar.php in line 66.

(TYPO3 7.6.15)

Reason: URL, title or icon is empty.

One reason may be a missing language file. Imagine you check out a TYPO3-page from git locally and also use a copy of the database/configuration of this site. Then, perhaps, the configured language is missing on your system. (For me it was german and the quick fix was to disable it via “Languages”.)