update wp 5.5 not working with medicenter

Spent hours updating WordPress to 5.5 and my 2 installs of medicenter do not work - the widgets are not working. i had to revert back to the older version of WordPress.
I also tried the update of the theme and it totally crashes my sites.
crashed theme

You should contact the theme author for support for free. If you’re looking for a paid support, you can contact me via this link or Studio