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 ('50979e505c8df796c52e96e7d2e3999a', -1, 1793222095, 1793222095, '54ccfc03', 2, 0, 0)

Line : 187
File : sessions.php