SfB plugin install

My goal is to integrate mattermost with SfB. I’m getting following errors after adding plugin.

From the console:

[root@mattermost]# /opt/mattermost/bin/mmctl plugin add /root/work/releases_skype/mattermost-plugin-skype4business-0.1.2.tar.gz
Unable to add plugin: /root/work/releases_skype/mattermost-plugin-skype4business-0.1.2.tar.gz. Error: : Unable to generate plugin webapp bundle.,

And in log:
{“level”:“error”,“ts”:1584987704.4662569,“caller”:“mlog/log.go:175”,“msg”:“Unable to generate plugin webapp bundle.”,“path”:"/api/v4/plugins",“request_id”:“uhsjm6adjbrifm86zzc67gmwnh”,“ip_addr”:“”,“user_id”:“s15otjemg3yi7mago7tri3g6gh”,“method”:“POST”,“err_where”:“installExtractedPlugin”,“http_code”:500,“err_details”:“unable to copy webapp bundle directory: skype4business: stat plugins/skype4business/webapp/dist: no such file or directory”}

Sorry for that. Here is how to install on Centos 7:
yum -y install gcc gcc-c++ make

Install nodejs 10

git clone https://github.com/kosgrz/mattermost-plugin-skype4business.git
cd mattermost-plugin-skype4business
/opt/mattermost/bin/mmctl plugin add dist/skype4business-0.1.2.tar.gz

Hello there,
Have same issue here.
stat plugins/skype4business/webapp/dist: no such file or directory
executed "make"command in plugin skype directory return an error:
build/setup.mk:4: *** “go is not available: see https://golang.org/doc/install”. Stop.
It means that golang is required to run plugin ?