cmd/go: Inconsistent vendoring detected. Please re-run "go mod vendor"

[mtalhasaleem502]

What version of Go are you using (go version)?

$ go version
go version go1.15.7 

Does this issue reproduce with the latest release?

What operating system and processor architecture are you using (go env)?

$ go env

set GO111MODULE=on
set GOARCH=amd64
set GOBIN=
set GOCACHE=C:\Users\Faizii\AppData\Local\go-build
set GOENV=C:\Users\Faizii\AppData\Roaming\go\env
set GOEXE=.exe
set GOFLAGS=
set GOHOSTARCH=amd64
set GOHOSTOS=windows
set GOINSECURE=
set GOMODCACHE=C:\Users\Faizii\Go\pkg\mod
set GONOPROXY=
set GONOSUMDB=
set GOOS=windows
set GOPATH=C:\Users\Faizii\Go;
set GOPRIVATE=
set GOPROXY=https://proxy.golang.org,direct
set GOROOT=C:\GO
set GOSUMDB=sum.golang.org
set GOTMPDIR=
set GOTOOLDIR=C:\GO\pkg\tool\windows_amd64
set GCCGO=gccgo
set AR=ar
set CC=gcc
set CXX=g++
set CGO_ENABLED=1
set GOMOD=C:\Users\Faizii\Go\src\c\chess\go.mod
set CGO_CFLAGS=-g -O2
set CGO_CPPFLAGS=
set CGO_CXXFLAGS=-g -O2
set CGO_FFLAGS=-g -O2
set CGO_LDFLAGS=-g -O2
set PKG_CONFIG=pkg-config
set GOGCCFLAGS=-m64 -mthreads -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=C:\Users\Faizii\AppData\Local\Temp\go-build578196042=/tmp/go-build -gno-record-gcc-switches

my_project.zip

What did you do?

After getting the any package with "go get " command or after changing the version of package in my go.mod file, then I used the "go mod vendor" it started to give the following error:

Inconsistent vendoring detected. Please re-run "go mod vendor".
See #39164 for more detail on this issue.

What did you expect to see?

I need to import the package and want to accessing its functionalities

What did you see instead?

Inconsistent vendoring detected. Please re-run "go mod vendor".
See #39164 for more detail on this issue.

[bcmills]

What was the output when you ran go mod vendor? (Did it succeed?)

[seankhliao]

and how was this vendor directory created / filled? it has things like .git/ that go shouldn't be adding

[mtalhasaleem502]

@bcmills @seankhliao I did add some packages manually in vendor directory but my project was working accurately, even after running the "go mod vendor" it was saying on those packages that " xyz: package xyz is not in GOROOT (C:\GO\src\xyz) ". But every thing was going smooth and working.
After getting the any package with "go get " command or after changing the version of package in my go.mod file, then I used the "go mod vendor" it started to give the following error in module name:

Inconsistent vendoring detected. Please re-run "go mod vendor".

[bcmills]

@mtalhasaleem502, go mod vendor requires that all packages transitively imported by your program be supplied by dependencies of your module. If any are missing, it attempts to supply them itself.

In order for go mod vendor to supply a missing dependency, it needs either a path that it can fetch from the Internet (that is, one that begins with the domain name where the dependency is hosted), or a path that it can find via a replace directive in your go.mod file.

Package paths like Authentication and CHK certainly cannot be fetched from the Internet, so they must instead be supplied by replace directives.

See https://golang.org/doc/modules/managing-dependencies#unpublished.

[mtalhasaleem502]

@bcmills @seankhliao Thank you so much I have completed successfully with your best support. I have learnt many things. "go mod vendor " was not working due to the addition of local packages manually in vendor directory. When I used the replace directives it started to work accurately. Again Thanks.