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 ('3d9aee8d1564db37860ea05789d2c7ba', -1, 1714035174, 1714035174, '12ddd0b7', -4, 0, 0)

Line : 187
File : sessions.php