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 ('544bc598ef50d0bd3822e2ecf765dd6d', -1, 1730432426, 1730432426, '12d9840f', -1, 0, 0)

Line : 195
File : sessions.php