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 ('9dc6677c58a1b1c6203ba4d84735b38a', -1, 1713985364, 1713985364, '031042ce', -7, 0, 0)

Line : 187
File : sessions.php