Internal error help pls

Help me what i should to do?
An internal error [256e21e2932c29833f0acc16aff33bb6] has occurred.

Hi, @Alex_UHG and welcome to the community!

Please provide us with your appId and steps to reproduce the issue.

Regards,
Marina

go to the Frontend and Main Container

@Alex_UHG

We are looking to the issue

Regards,
Marina

@Alex_UHG

There is no page.json file for this container:

/ui-builder/containers/MAIN_CONTAINER/pages/rec/page.json

Could you please specify what you did before the container became unusable?

Regards,
Marina

I do not remember

Could you check if it works now?