phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : -1 ERROR: duplicate key value violates unique constraint "phpbb_session_pkey" DETAIL: Key (session_id)=(812e1f47b086bbfb5fa8a002590427d9) already exists.

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('812e1f47b086bbfb5fa8a002590427d9', -1, 1563692992, 1563692992, '22c979d5', -1, 0, 0)

Line : 188
File : sessions.php