cannot load github.com/ugorji/go/codec: ambiguous import: found .... in multiple modules

[maerics]

I wanted to try the cookie-based session example from the readme but it fails with the following error:

cannot load github.com/ugorji/go/codec: ambiguous import: found github.com/ugorji/go/codec in multiple modules:

To reproduce:

$ ls -l
total 0
$ go mod init foo
go: creating new go.mod: module foo
$ # copy cookie-based example code into the clipboard
$ pbpaste > ./main.go
$ go fmt ./main.go && go run ./main.go 
go: finding github.com/gin-contrib/sessions latest
go: finding github.com/gin-contrib/sessions/cookie latest
go: finding github.com/gin-gonic/gin v1.4.0
...
go: extracting github.com/gorilla/securecookie v1.1.1
build command-line-arguments: cannot load github.com/ugorji/go/codec: ambiguous import: found github.com/ugorji/go/codec in multiple modules:
	github.com/ugorji/go v1.1.4 (/Users/x/go/pkg/mod/github.com/ugorji/[email protected]/codec)
	github.com/ugorji/go/codec v0.0.0-20181209151446-772ced7fd4c2 (/Users/x/go/pkg/mod/github.com/ugorji/go/[email protected])
$ echo $?
1

I can't tell if this is an issue with ugorji/go or cmd/go itself but thought I'd post here in case anyone knows of a fix. Will update if I find one.

[maerics]

Here's a workaround found in ugorji/go#279:

go get github.com/ugorji/[email protected]

[kuhufu]

I also encountered this problem.
gin latest version
in file go.mod
github.com/ugorji/go/codec v0.0.0-20190204201341-e444a5086c43
change to
github.com/ugorji/go v1.1.4