phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '2fa4eafe3af8471a4c1a1f28286e3405' 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 ('2fa4eafe3af8471a4c1a1f28286e3405', -1, 1770246170, 1770246170, 'd849d88f', -4, 0, 0)

Line : 187
File : sessions.php