phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '6c8d44178ddcb535b5e870ed7ea8480b' 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 ('6c8d44178ddcb535b5e870ed7ea8480b', -1, 1769183496, 1769183496, 'd849d89a', -4, 0, 0)

Line : 187
File : sessions.php