phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '1b7fa7fbdecaafb14881d0eee3bc00b4' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('1b7fa7fbdecaafb14881d0eee3bc00b4', -1, 1769512479, 1769512479, 'd849d83c', 2, 0, 0)

Line : 187
File : sessions.php