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 ('691cfcc3de0f0894e6bb80dcf4f6f2eb', -1, 1714707831, 1714707831, '12e3be5d', 7, 0)

Line : 158
File : sessions.php