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 ('3c3a6efa4847fc87304fe1e6b0b60554', -1, 1713586300, 1713586300, '0389a4f1', 7, 0, 0)

Line : 187
File : sessions.php