phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('4218ecf7df676143c44cc066d3ce1061', -1, 1713529427, 1713529427, '038a655f', -2, 0, 0)

Line : 187
File : sessions.php