phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '21c49c4da17388d1f17e89b2df9c2f6c' 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 ('21c49c4da17388d1f17e89b2df9c2f6c', -1, 1714202598, 1714202598, '038dc7f3', -4, 0, 0)

Line : 187
File : sessions.php