phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '09a764bd40eaa95fec2de7a6d7a27a9c' for key 'phpbb_sessions.PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('09a764bd40eaa95fec2de7a6d7a27a9c', -1, 1767312085, 1767312085, 'd849d819', -9, 0, 0)

Line : 187
File : sessions.php