If you encountered an issue like the one above:
There were some errors in installing package.
First check logs on location :
If you see something like this :
"failure: repodata/repomd.xml from bintray--ookla-rhel: [Errno 256] No more mirrors to try." "https://ookla.bintray.com/rhel/repodata/repomd.xml: [Errno 14] HTTPS Error 403 - Forbidden"
Use yum config manager to disable this repository that is used by default :
yum-config-manager --disable bintray--ookla-rhel
Try again to install the required app , enjoy !