phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '21df7b21f1940e516fb575ca9082b4a7' for key 1

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('21df7b21f1940e516fb575ca9082b4a7', -1, 1715775174, 1715775174, '0314eb58', 13, 0, 0)

Line : 187
File : sessions.php