phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'd59ad6c7840fbabdc30995c2cc800c28' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('d59ad6c7840fbabdc30995c2cc800c28', -1, 1550910870, 1550910870, '6b17b0a2', 14, 0, 0)

Line : 198
File : sessions.php