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 ('14a90adf41b4c755851ccb7581185f7f', -1, 1749603886, 1749603886, 'd849d873', 5, 0, 0)

Line : 190
File : sessions.php