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) VALUES ('ef9b23e765c401fdbdf78718f34009ea', -1, 1714392238, 1714392238, '03908f1f', 19, 0)

Line : 158
File : sessions.php