this derivation will be built:
  /nix/store/bvaiggbgmbw5khqzcm8kixblq6qbq938-symbola-13.00.drv
building '/nix/store/3pns9d273iln15bznf2mq44c3q79s47c-symbola-13.00.drv'
symbola-13.00> 
symbola-13.00> trying https://dn-works.com/wp-content/uploads/2020/UFAS-Fonts/Symbola.zip
symbola-13.00>   % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
symbola-13.00>                                  Dload  Upload   Total   Spent    Left  Speed
symbola-13.00>   0     0    0     0    0     0      0      0 --:--:--  0:00:02 --:--:--     0
symbola-13.00> curl: (22) The requested URL returned error: 404
symbola-13.00> error: cannot download symbola-13.00 from any mirror
error: Cannot build '/nix/store/3pns9d273iln15bznf2mq44c3q79s47c-symbola-13.00.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/xk3cvw9y5hgs0qrs2m4m0fdbxicjd0vz-symbola-13.00
       Last 7 log lines:
       >
       > trying https://dn-works.com/wp-content/uploads/2020/UFAS-Fonts/Symbola.zip
       >   % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
       >                                  Dload  Upload   Total   Spent    Left  Speed
       >   0     0    0     0    0     0      0      0 --:--:--  0:00:02 --:--:--     0
       > curl: (22) The requested URL returned error: 404
       > error: cannot download symbola-13.00 from any mirror
       For full logs, run:
         nix log /nix/store/3pns9d273iln15bznf2mq44c3q79s47c-symbola-13.00.drv
error: build of resolved derivation '/nix/store/3pns9d273iln15bznf2mq44c3q79s47c-symbola-13.00.drv' failed