from your installation after upgrading, you will get an error about these extensions are available twice (once in "./ext" and once in "./vendor/aimeos/"). Your custom extensions can still be placed in the ./ext directory to make development easier.
Due to splitting uploaded files by site, the directory structure changed and those file are now stored in subdirectories named by the site ID, e.g. "./1./files/". New uploaded files use that new structure automatically, old files stay where they are and are still found - at least in TYPO3 installations. In Laravel and Symfony installations, the uploaded files will be stored in an additional sub-directory named "aimeos" in "./public". The old paths were:
- ./public/files/...
- ./public/previews/...
In 2021.07+, the new paths are:
- ./public/aimeos/1./files/...
- ./public/aimeos/1./previews/...
- ./public/aimeos/2./files/...
- ./public/aimeos/2./previews/...
Thus, old uploaded files will be only found if you move the old paths to the new "./public/aimeos" sub-directory: