Cannot push local chart to s3 repo

[schollii]

Any idea what I'm doing wrong with helm 3?

$ helm version
version.BuildInfo{Version:"v3.4.0", GitCommit:"7090a89efc8a18f3d8178bf47d2462450349a004", GitTreeState:"clean", GoVersion:"go1.14.10"}

$ helm plugin install https://github.com/hypnoglow/helm-s3.git
Downloading and installing helm-s3 v0.10.0 ...
Checksum is valid.
Installed plugin: s3

$ helm repo add test-ofm "s3://my-bucket/helm-charts-repo"
"test-ofm" has been added to your repositories

$ ls -l ./ambassador-2.1.0.tgz 
-rw-r--r-- 1 test test 7926 Dec  1 23:51 ./ambassador-2.1.0.tgz

$ helm s3 push ./ambassador-2.1.0.tgz test-ofm
repo with name test-ofm not found, try `helm repo add test-ofm <uri>`
Error: plugin "s3" exited with error

Side note that I removed the following lines from output as they get printed every command:

WARNING: "kubernetes-charts.storage.googleapis.com" is deprecated for "stable" and will be deleted Nov. 13, 2020.
WARNING: You should switch to "https://charts.helm.sh/stable"

With helm 2 I have no problem:

$ helm version --client
Client: &version.Version{SemVer:"v2.11.0", GitCommit:"2e55dbe1fdb5fdb96b75ff144a339489417b146b", GitTreeState:"clean"}

$ helm plugin install https://github.com/hypnoglow/helm-s3.git
Downloading and installing helm-s3 v0.10.0 ...
Checksum is valid.
Installed plugin: s3

$ helm repo add test-ofm "s3://my-bucket/helm-charts-repo"
"test-ofm" has been added to your repositories

$ helm search ambassador
NAME             	CHART VERSION	APP VERSION	DESCRIPTION                                    
stable/ambassador	5.3.2        	0.86.1     	DEPRECATED A Helm chart for Datawire Ambassador

$ helm s3 push ./ambassador-2.1.0.tgz test-ofm
$ helm search ambassador
NAME             	CHART VERSION	APP VERSION	DESCRIPTION                                    
test-ofm/ambassador   	2.1.0        	0.53.1     	A Helm chart for Datawire Ambassador           
stable/ambassador	5.3.2        	0.86.1     	DEPRECATED A Helm chart for Datawire Ambassador
$

Doing helm search repo ambassador from the shell running helm 3 shows the version just uploaded to test-ofm (after helm repo update).

[jendrikjoe]

Hit the same bug today. For me adding HELM_S3_MODE=3 solved the issue, in your case e.g.

HELM_S3_MODE=3 helm s3 push ./ambassador-2.1.0.tgz test-ofm