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 ('c0381ce1a0749b0405a5095474f4bc7d', -1, 1714278171, 1714278171, '0a020003', -2, 0, 0)

Line : 187
File : sessions.php