phpBB : Critical Error

Error creating new session

DEBUG MODE

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

INSERT INTO sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('1688a9ab9d724c493adc687a952f5308', -1, 1715206249, 1715206249, '038e77f1', 2, 0, 0)

Line : 189
File : sessions.php