Pihole -up results in certificate failure

Is it my setup or is something wrong?

Pi-hole version is release/v5.4 v5.3.1-49-ga52a5e7e (Latest: v5.3.1)
AdminLTE version is release/v5.6 v5.5-44-g4e1f7c2 (Latest: v5.5)
FTL version is release/v5.9 vDev-00c44c5 (Latest: v5.8.1)

curl: (60) SSL certificate problem: certificate has expired
More details here: https://curl.haxx.se/docs/sslcerts.html

curl failed to verify the legitimacy of the server and therefore could not
establish a secure connection to it. To learn more about this situation and
how to fix it, please visit the web page mentioned above.
  [i] Checksums do not match, downloading from ftl.pi-hole.net.
  [i] Downloading and Installing FTL...curl: (60) SSL certificate problem: certificate has expired
More details here: https://curl.haxx.se/docs/sslcerts.html

curl failed to verify the legitimacy of the server and therefore could not
establish a secure connection to it. To learn more about this situation and
how to fix it, please visit the web page mentioned above.
  [✗] Downloading and Installing FTL
  Error: URL https://ftl.pi-hole.net/release/v5.9/pihole-FTL-armv7-linux-gnueabihf not found
  [✗] FTL Engine not installed

  Unable to complete update, please contact Pi-hole Support

Your debug token is: https://tricorder.pi-hole.net/nf7i8cj393

Thanks for the report, there is nothing wrong with your system, the automatic SSL certificate renewal didn't work.

Screenshot from 2021-07-09 09-52-16

I'm looking at this now.

Fixed.

Screenshot from 2021-07-09 10-17-57