Updating to ver. 5.0.0¶
If you are updating from a version < 5.0.0, you must change your custom template-file!
The file Layouts/Default.html was removed because of a major bug in TYPO3 8. It is not possible to use this file even with TYPO3 8.7.10.
Got to your template in file fileadmin-folder and replace this lines:
<f:layout name="Default" /> <f:section name="main">