Invalid type in JSON write - Updating User with a relation

test.zip (437.3 KB)

Create a “Contact” set a relation to the User.
Update user causes "Invalid type in JSON write "

Hello Robert,

Thank you for reporting this issue and for the test example.
I’ve created an internal ticket BKNDLSS-21341 and it will be checked as soon as possible.

Regards,
Olha

Issue has been fixed in v 5.7.14. Could you check please?

Regards,
Olha