Page builder not working in Joomla 4.0.3v

[Pream-webapps]

Getting error when I click on create new page

[Pream-webapps]

Getting error when I click on create new page

[evildronepilot]

Hi. Same issue!

The Error:
An error has occurred.
0 Class 'JObserverMapper' not found

[joschober]

Hi,
i have the same error on upgraded joomla (3.10.9->4.1.4) and clean j4 (4.1.4) installation.
0 Class 'JObserverMapper' not found
Additionally, I cannot select a jd builder page when editing a menu.
any help?

[Carnavaldelnorte]

hola, alguien lo ha podido instalar en joomla 4?, lo tenia en joomla 3 y funcionaba genial

[FaySmash]

I fixed at least this issue with my fork:
https://gitlab.com/FaySmash/JD-Builder/-/releases/2.0