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 ('fff0c5d9bd4fb04f5f688a6f0a100ad1', -1, 1714664291, 1714664291, '12bed986', 3, 0)

Line : 158
File : sessions.php