GO SDK error

PM <hyperledger@...>

I am trying following steps from Go SDK (quoting package instructions
with my comments).

### Running a portion of the test suite

# In the Fabric SDK Go directory
cd $GOPATH/src/github.com/hyperledger/fabric-sdk-go/

# Ensure dependencies are installed
make depend (the output is attached as 1.txt)

# Running code checks (license, linting, spelling, etc)
make checks (this one produced an error, attached as 2.txt)

Any pointers on fixing this error?

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