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 ('f6b02c5e42b6fc9bdc30c3142d441635', -1, 1558598212, 1558598212, '00000000', -4, 0, 0)

Line : 172
File : sessions.php