after upgrading to Neos 3.3 LTS I get an exception:
The Fusion object `Neos.NodeTypes.Form:Form` which you tried to inherit from does not exist. Maybe you have a typo on the right hand side of your inheritance statement for `Neos.NodeTypes:Form`.
If I try
./flow node:repair I get
Found undefined property named "formIdentifier" in "/sites/package/node-e0lhjmj30qn6l/main/node-pkdioeo6r65qi" (Neos.NodeTypes:Form)
Do you want to remove undefined node properties? (y/n)
The form is implemented like described in the docs and before upgrade it worked well.
If I try to create a new form in backend I see that there is no Form NodeType under General anymore.