Upgrade to Joomla 6 breaks Event database

maybe good to add:
-  docs.joomla.org/Joomla_5.4.x_to_6.x_Planning_and_Upgrade_Step_by_Step

I did have local Joomla 5 (latest) and JEM4.5.0beta6 from today.    Did set update channel of Joomla to Joomla Next and upgraded to Joomla 6. Currently things are working fine.  at least am seeing events.   Have to say that i did not install all modules + plugins so not sure if that would have some effect.

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did disable the backward compatibilty plugin for joomla 4 as noted in the guide. 

I don't have administrator permissions on the website, and I can't create new articles or menus. For now, I have updated it in this menu item to have both upgrades.