phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('191035cbf0d26e52a9a1783af3ff4d2c', -1, 1715029984, 1715029984, '12daacf9', -11, 0, 0)

Line : 189
File : sessions.php