I'm upgrading bootstrap_package from 7.0.5 to 8.06. First I got the error
Given select field item list was not found
Event the install tool could not be used.
So I commented out the lines 49-71 in typo3conf/ext/bootstrap_package/Configuration/TCA/Overrides/tt_content_general_columns.php which leading to the problem. I assumed the coming upgrading wizard in install tool will fix that.
Now in upgrade wizard in install tool I get the fatal error:
Class 'TYPO3\CMS\Install\Updates\SectionFrameToFrameClassUpdate' not found in xxx/typo3conf/ext/bootstrap_package/Classes/Updates/SectionFrameToFrameClassUpdate.php on line 16
I think that's the needed update wizard which would solve the first error
TYPO3 Core Version is 7.6.23
Need help.