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 ('6b1608641cb5d9d1fbad6ca8920d7456', -1, 1714626932, 1714626932, '0391821f', -7, 0)

Line : 158
File : sessions.php