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 ('b53ea4635aa9f6d6f833d9826e8cd9ac', -1, 1715108440, 1715108440, '0d3afc08', -7, 0, 0)

Line : 189
File : sessions.php