Unable to update FTL - curl: (60) SSL certificate problem: certificate has expired

Expected Behaviour:

HW: Raspberry Pi 3B+
OS: bullseye (updated with latest patches)

Command: sudo pihole -up

Expect to update FTL

Actual Behaviour:

$ sudo pihole -up
[✓] Update local cache of available packages
[i] Existing PHP installation detected : PHP version 7.4.33
[✓] Checking for git
[✓] Checking for iproute2
[✓] Checking for dialog
[✓] Checking for ca-certificates

[i] Checking for updates...
[i] Pi-hole Core: up to date
[i] Web Interface: up to date
[i] FTL: update available

[i] FTL out of date, it will be updated by the installer.

[✓] Root user check

    .;;,.
    .ccccc:,.
     :cccclll:.      ..,,
      :ccccclll.   ;ooodc
       'ccll:;ll .oooodc
         .;cll.;;looo:.
             .. ','.
            .',,,,,,'.
          .',,,,,,,,,,.
        .',,,,,,,,,,,,....
      ....''',,,,,,,'.......
    .........  ....  .........
    ..........      ..........
    ..........      ..........
    .........  ....  .........
      ........,,,,,,,'......
        ....',,,,,,,,,,,,.
           .',,,,,,,,,'.
            .',,,,,,'.
              ..'''.

[i] SELinux not detected
[✓] Update local cache of available packages
[i] Existing PHP installation detected : PHP version 7.4.33

[✓] Checking apt-get for upgraded packages... up to date!

[i] Checking for / installing Required dependencies for OS Check...
[✓] Checking for grep
[✓] Checking for dnsutils

[✓] Supported OS detected
[i] Checking for / installing Required dependencies for this install script...
[✓] Checking for git
[✓] Checking for iproute2
[✓] Checking for dialog
[✓] Checking for ca-certificates

[i] Performing unattended setup, no dialogs will be displayed
[i] Performing reconfiguration, skipping download of local repos
[✓] Resetting repository within /etc/.pihole...
[✓] Resetting repository within /var/www/html/admin...
[i] Checking for / installing Required dependencies for Pi-hole software...
[✓] Checking for cron
[✓] Checking for curl
[✓] Checking for iputils-ping
[✓] Checking for psmisc
[✓] Checking for sudo
[✓] Checking for unzip
[✓] Checking for idn2
[✓] Checking for libcap2-bin
[✓] Checking for dns-root-data
[✓] Checking for libcap2
[✓] Checking for netcat-openbsd
[✓] Checking for procps
[✓] Checking for jq
[✓] Checking for lighttpd
[✓] Checking for php7.4-common
[✓] Checking for php7.4-cgi
[✓] Checking for php7.4-sqlite3
[✓] Checking for php7.4-xml
[✓] Checking for php7.4-intl
[✓] Checking for php7.4-json

[✓] Enabling lighttpd service to start on reboot...
[✓] Checking for user 'pihole'

[i] FTL Checks...

[✓] Detected AArch64 (64 Bit ARM) processor
[i] Checking for existing FTL binary...
[i] Downloading and Installing FTL...curl: (60) SSL certificate problem: certificate has expired
More details here: curl - SSL CA Certificates

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://github.com/pi-hole/ftl/releases/latest/download/pihole-FTL-aarch64-linux-gnu not found
[✗] FTL Engine not installed

Unable to complete update, please contact Pi-hole Support

Debug Token:

https://tricorder.pi-hole.net/p1GC5mGH/

Don't know what is happening. I tried this several time and failed each time.
I've just tried it yet again and it has now worked.
Can close the case.

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