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 ('b57fd7ac96d2a69f0f50d8edb5c71cd0', -1, 1553303037, 1553303037, '34c91bd3', 23, 0, 0)

Line : 189
File : sessions.php