# open Admin Console of In-Portal 5.2.x installation (just to build unit config cache)
# add new unit config in any module (just `*_config.php` file)
# try accessing it's data (via `getUnitOption`) in a new tag that is placed on opened template
# confirm, that exception (or fatal error) about missing unit is thrown
# go to `/core/install.php` script (in 2nd browser tab)
# if you're stuck on `Check Paths` step, then set requested permissions on files
# confirm, that installation wizard screen is shown
# somewhere in `/core/install.php` after application is initialized type accessing unit data again
# confirm, that it works