phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '21b7907f2f8197315b893c4eb7c7ac6f' 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 ('21b7907f2f8197315b893c4eb7c7ac6f', -1, 1759687099, 1759687099, 'd849d809', -9, 0, 0)

Line : 187
File : sessions.php