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 ('68019c6d823a66e128171ca8d2b0f939', -1, 1714711033, 1714711033, '0315a257', 15, 0)

Line : 158
File : sessions.php