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 ('2fd36bb447322e8fc0c16a63e6fe57d2', -1, 1714056019, 1714056019, '0a020003', 1, 0, 0)

Line : 187
File : sessions.php