# Error creating App

**URL:** <https://forums.suse.com/t/error-creating-app/14593>\
**Category:** SUSE Rancher Prime\
**Created:** [June 20, 2019, 8:04pm UTC](https://forums.suse.com/t/error-creating-app/14593 "2019-06-20T20:04:59Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![traxys](https://avatars.discourse-cdn.com/v4/letter/t/919ad9/32.png) [@traxys](https://forums.suse.com/u/traxys)\
**Post date:** [June 20, 2019, 8:05pm UTC](https://forums.suse.com/t/error-creating-app/14593/1 "2019-06-20T20:05:00Z")

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I created a rancher instance and a etcd-control-worker node on another machine on the same network.  
The rancher 2.x is running on Arch Linux and the kubernetes node on Rancher OS. I successfully setup a rancher instance with let’s encrypt for the certificate.

When I try to add an app from the catalog on the cluster with on Default I get an error, for example with mariaDB :  
`Failed to install app mariadb-cvg2w. Error: UPGRADE FAILED: Get https://localhost:443/k8s/clusters/c-7vcpk/api/v1/namespaces/mariadb-4ddrl/configmaps?labelSelector=NAME%!D(MISSING)mariadb-cvg2w%!C(MISSING)OWNER%!D(MISSING)TILLER%!C(MISSING)STATUS%!D(MISSING)DEPLOYED: tls: server selected unsupported protocol version 301`

My guess is that there is a problem with making a request to localhost because of the let’s encrypt certficate.

Does anybody know where does the problem come from (Linux, Docker,Rancher … ) and how to fix it ?

Thanks!