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 ('1881c1274197510260842b62efdd86d9', -1, 1714395752, 1714395752, '038e234b', 7, 0)

Line : 158
File : sessions.php