Database Error!

Error: Field 'last_seen' doesn't have a default value
Query: INSERT INTO users (uid, password, ip_address, first_seen) VALUES ("5da5bb6a03c590.68396527", "fO8m4M3dUTGkaRU5SNZ6JO1Dsrc8AbTH", "3.214.184.196", UNIX_TIMESTAMP())
File: /includes/database.class.php
Line: 98
Backtrace: