phpBB : Critical Error

Error creating new session

DEBUG MODE

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

INSERT INTO phpbb2_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('adc4636b06f73f39e3ea66fc802fc0d3', -1, 1590687136, 1590687136, '12d08421', -4, 0, 0)

Line : 172
File : sessions.php