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 ('212270ce7a8f9ea213bb9ff4ce4974ba', -1, 1714132897, 1714132897, '0d3b642a', 3, 0, 0)

Line : 187
File : sessions.php