I can't get the duckling server to work

Hello.
I want to run a duckling server on ubuntu18.04/botpress12.22.1.

However, when I run the command in the duckling-master directory


$stack exec duckling-example-exe
Downloaded lts-14.20 build plan.
AesonException “Error in $[‘system-info’]: key “os” not present”


I am getting the above error. How can I resolve this?

Hello.
I reinstalled botpress and haskell-stack to fix this issue. thank you.

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