Disable master-password

[DobroFenix]

Hi!

I wrote master-password to the authentication form - when logging in using LDAP login and password, the user is created in the system, but the login is not made, since js returns an error:

SyntaxError: Unexpected token 'C', "Call to a "... is not valid JSON
Call to a member function getId() on null

How to correctly inject master-password into the code so that LDAP users can log in without specifying a master password and additional actions after entering a login and password?