Form is breaking the cover block ?

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Since the wordpress 6.1 update I have had a problem with admin->page interface.
Although I have provided a link to this page all the pages are affected but only the page edit at the back end shows the malfunction.The front end section in question is the cover with the Calculate your playing Handicap Table and form.
The malfunction is a form inside a cover block is throwing this message “This block has encountered an error and cannot be previewed.”
The layout is a Group with cover block image, inside the cover block two are columns with a calc form in one and a table in the other.
Some of the errors showing at the back end using inspect –
Uncaught TypeError: wp.data.dispatch
The block “core/post-comments” must have a title.
Block validation: Block validation failed for core/button
Error: Minified React error #130

Whilst I have some coding skills this lot is definately beyond my limitations so any help would be great

The page I need help with: [log in to see the link]

 

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