Please follow the below template, it will help us to help you!
Expected Behaviour:
Pihole should update with pihole -up
Actual Behaviour:
curl: (56) OpenSSL SSL_read: SSL_ERROR_SYSCALL, errno 104
[✗] Downloading and Installing FTL
Error: URL https://github.com/pi-hole/FTL/releases/download/v4.3.1/pihole-FTL-linux-x86_64 not found
[✗] FTL Engine not installed
Unable to complete update, please contact Pi-hole Support