phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '66fabfdcd8b29cf0bf53ef2ae8409fb4' 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 ('66fabfdcd8b29cf0bf53ef2ae8409fb4', -1, 1771292073, 1771292073, 'd849d874', -9, 0, 0)

Line : 187
File : sessions.php