phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 2

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('d7249836d191ef1ce767419a4c740c2e', -1, 1711706681, 1711706681, '54ccfc03', -1, 0, 0)

Line : 187
File : sessions.php