After several inspection CAF has disapprove some countries stadium, as they were far from ready to host the qualifiers.

The following countries will host their World Cup Qualifiers games outside their country after CAF rule that none of their stadiums fit to host international matches.
Senegal lead the list as the top country who couldn’t host the qualifiers on their home soil.
Burkina Faso and Malawi were also ruled out as non of their stadium meet the standard set by FIFA and CAF.
The countries includes
Senegal 🇸🇳,
Burkina Faso 🇧🇫,
Malawi 🇲🇼,
Mali 🇲🇱,
CAR 🇨🇫,
Burundi 🇧🇮,
Eritrea 🇪🇷,
Chad 🇹🇩,
Gambia 🇬🇲,
Lesotho 🇱🇸 ,
Sierra Leone 🇸🇱
,Somalia 🇸🇴
Namibia 🇳🇦