Breaking: #77783 - Removed unused ExtJS JavaScript libraries
See forge#77783
Description
The ExtJS libraries app.
, grid.
, ux.
have been removed from the TYPO3 core
after all usages of them have been removed from the TYPO3 core with Feature #74359.
Impact
Including or calling any of the named JavaScript libraries will result in an error.
Affected Installations
Any TYPO3 installations using custom extensions based on ExtJS which rely on the named libraries.
Migration
There is no migration available, consider migrating to a supported modern framework.