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 ('022c36651f8bf6b5947a8d85ad737f63', -1, 1711658926, 1711658926, '03ebf32d', 7, 0, 0)

Line : 187
File : sessions.php