phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '21d6c641d7e2356f30ef852b63824c5b' 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 ('21d6c641d7e2356f30ef852b63824c5b', -1, 1750400001, 1750400001, 'd849d8a3', 0, 0, 0)

Line : 188
File : sessions.php