I need help. Plone 5 stopped working after installing quintagroup.transmogrifier

Hallo Anek,

working week is over, did you come any further resoving your Problem?
And for Migrations to Plone Version 5: Is it from 4 with Archetypes or even 3 or 2? Or is it from plone 4 Dexterity?

By migrating: do you mean from something else than Plone, if not you probably want to upgrade.

https://docs.plone.org/manage/upgrading/