Database Error!

Error: Field 'last_seen' doesn't have a default value
Query: INSERT INTO users (uid, password, ip_address, first_seen) VALUES ("5da5be3c056697.53134970", "rY0bSn22cps6TkvLGMnpkKLzNchokUb7", "3.214.184.196", UNIX_TIMESTAMP())
File: /includes/database.class.php
Line: 98
Backtrace: