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 ('55d67eb08bc5db144bbec82249aafda1', -1, 1568934517, 1568934517, '22ccb0bd', 54, 0, 0)

Line : 189
File : sessions.php