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 ('151b744d2e57e93cb66865f66bc8700f', -1, 1713487009, 1713487009, '03812d5c', 2, 0, 0)

Line : 187
File : sessions.php