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 ('79384e8ea908b0fe1cc941706a736e76', -1, 1713561304, 1713561304, '0380c7d2', -11, 0, 0)

Line : 187
File : sessions.php