phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '8168fc8a7b0469f447867da745091f05' 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 ('8168fc8a7b0469f447867da745091f05', -1, 1766532356, 1766532356, 'd849d82e', -4, 0, 0)

Line : 187
File : sessions.php