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 ('1bb79f3e99f9fdda9f53b118eea058ed', -1, 1714355665, 1714355665, '0385780a', 11, 0)

Line : 158
File : sessions.php