TYPO3 Core

This happened all time when you want to delete current temporary page in temporary mount mode. See picture in attache,

What to do?

I fixed it in alt_db_navframe.php in

function init ()

after
// Temporary DB mounts:
$this->initializeTemporaryLocationsMount();
i write:

if ( !t3lib_BEfunc::readPageAccess(
$this->active_tempMountPoint,
$BE_USER->getPagePermsClause(1)) ) {
$this->settingTemporaryMountPoint(0);
}
(issue imported from #M1827)