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 ('50468a9a4b3f5a534d8e5838516391d0', -1, 1722050929, 1722050929, '54ccfc03', -1, 0, 0)

Line : 187
File : sessions.php