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 ('97b7e3a28f8696ca1a486622b0dd76af', -1, 1553299597, 1553299597, '34c91bd3', 0, 0, 0)

Line : 189
File : sessions.php