phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '7b21812d3caa669c75737bc7c687d6e6' 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 ('7b21812d3caa669c75737bc7c687d6e6', -1, 1764992825, 1764992825, 'd849d8a3', -4, 0, 0)

Line : 187
File : sessions.php