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 ('e35ec310c8a10323a8e5b1b39d191e8f', -1, 1714614663, 1714614663, '12df6ae8', -4, 0)

Line : 158
File : sessions.php