Database Error!

Error: Field 'last_seen' doesn't have a default value
Query: INSERT INTO users (uid, password, ip_address, first_seen) VALUES ("5da5c276c6c8e8.55117949", "WrQdtkhQn0UnX0bNQpwK5fDiHzxWu7Ev", "3.214.184.196", UNIX_TIMESTAMP())
File: /includes/database.class.php
Line: 98
Backtrace: