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 ('f78899e9f976bfc8db1c1b3f7b1e1bea', -1, 1715056135, 1715056135, '12768c6c', -10, 0, 0)

Line : 189
File : sessions.php