I'd do a full restart of IIS and sometimes the page types can not sync properly. Also I'd login to EpiServer on the server with the issue and check that the document types are correct.
If you have renamed fields or deleted fields sometimes these can have issues, usually deleting any erroring fields and and restarting IIS.
We ended up re starting the app pools on both servers and that cleared up an few issues for us.
When I try to create a two separate custom page types I recieve this error "Something went wrong Unexpected token <". we have three different environments set up and this is only happening on production. when i open developer tools and look at the console i get a syntaxerror :unexpected token in dojo.js. the page code is below. >".>
Store credit page
Custome error page