go mod fails to find version v0.0.0-00010101000000-000000000000 of a dependency

Issue

I’m trying to download all of the dependencies of a project via go mod; the problem occurs when it comes to execute go mod vendor on the CLI. The output is as follows:

go: finding github.com/hyperledger/fabric-sdk-go v0.0.0-00010101000000-000000000000
go: github.com/hyperledger/fabric-sdk-go@v0.0.0-00010101000000-000000000000: unknown revision 000000000000
go: error loading module requirements

The code that imports the libraries is this:

import (    
    "github.com/hyperledger/fabric-sdk-go/pkg/client/ledger"
    "github.com/hyperledger/fabric-sdk-go/pkg/client/resmgmt"
    "github.com/hyperledger/fabric-sdk-go/pkg/fabsdk"
)

krakengosdk is the name of the package I’m working on:

go mod init krakengosdk

Any solution? I’ve been looking for any solution for a while, but I haven’t came across anything useful.

EDIT: I’ve updated the go version to 1.13; it seems like the error has to be with “github.com/hyperledger/fabric-sdk-go/test/integration@v0.0.0-20190918153951-5d7ae7a5be8f”:

go get -v github.com/hyperledger/fabric-sdk-go/test/integration@latest
go: finding github.com/hyperledger/fabric-sdk-go/test/integration latest
go get: github.com/hyperledger/fabric-sdk-go/test/integration@v0.0.0-20190918153951-5d7ae7a5be8f requires
    github.com/hyperledger/fabric-sdk-go@v0.0.0-00010101000000-000000000000: invalid version: unknown revision 000000000000

Solution

Proposed diagnostics

I suggest to try those commands in console (bash/dash/fish/zsh):


# 1. Create clean project 
$ mkdir /tmp/checkmods && cd /tmp/checkmods  # create clean directory
$ export GO111MODULES=on
$ go version # check that version 1.13
$ go mod init main # name of package does not matter here

# 2. Install packages, check output
$ go get -v github.com/hyperledger/fabric-sdk-go/pkg/client/ledger
$ go get -v github.com/hyperledger/fabric-sdk-go/pkg/client/resmgmt
$ go get -v github.com/hyperledger/fabric-sdk-go/pkg/fabsdk

# 3. Create main.go 
$ touch main.go
$ # edit main.go, add imported packages, import something from those packages
$ go mod vendor 
# Do you have problems here? 
# if you encounter problems: 
# - play around  with `go mod tidy`
# - look at `go.mod` and `go.sum`
# - `go mod graph/verify/why` - are your friends

Example of main.go:

package main

import (
    "fmt"
    "github.com/hyperledger/fabric-sdk-go/pkg/client/ledger"
    "github.com/hyperledger/fabric-sdk-go/pkg/client/resmgmt"
    "github.com/hyperledger/fabric-sdk-go/pkg/fabsdk"
)

func main() {
    var (
        cln  &ledger.Client
        rsm  &resmgmt.Client
        fbs  &fabsdk.FabricSDK
    )
    fmt.Printf("%T %T %T\n", cln, rsm, fbs)
}

Analysis

If you encounter problems: explain on which line you encountered, what kind of problem.

If everything OK with clean start: look what is different between your project and clean start (diffs for go.sum & go.mod)

Good luck!

Answered By – Alex Yu

Answer Checked By – Jay B. (GoLangFix Admin)

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