I can see from your Data URI urn:com:microsoft:aad:b2c:elements:selfasserted:1.1.0 that you are using the old Data URI values and these no longer work.

You need to migrate the page layouts to the new Data URI values which contain the word contract

urn:com:microsoft:aad:b2c:elements:selfasserted:1.1.0 becomes urn:com:microsoft:aad:b2c:elements:contract:selfasserted:2.1.33

Note, the latest documented Self Asserted page layout version is 2.1.30 but 2.1.33 is the latest published version.