Running dnf As root: 
Updating Subscription Management repositories.
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[MIRROR] mozjs60-60.7.0-2.el8.x86_64.rpm: Curl error (6): Couldn't resolve host name for http://download.eng.bos.redhat.com/brewroot/vol/rhel-8/packages/mozjs60/60.7.0/2.el8/x86_64/mozjs60-60.7.0-2.el8.x86_64.rpm [Could not resolve host: download.eng.bos.redhat.com]
[MIRROR] mozjs60-60.7.0-2.el8.x86_64.rpm: Curl error (6): Couldn't resolve host name for http://download.eng.bos.redhat.com/brewroot/vol/rhel-8/packages/mozjs60/60.7.0/2.el8/x86_64/mozjs60-60.7.0-2.el8.x86_64.rpm [Could not resolve host: download.eng.bos.redhat.com]
[MIRROR] mozjs60-60.7.0-2.el8.x86_64.rpm: Curl error (6): Couldn't resolve host name for http://download.eng.bos.redhat.com/brewroot/vol/rhel-8/packages/mozjs60/60.7.0/2.el8/x86_64/mozjs60-60.7.0-2.el8.x86_64.rpm [Could not resolve host: download.eng.bos.redhat.com]
[MIRROR] mozjs60-60.7.0-2.el8.x86_64.rpm: Curl error (6): Couldn't resolve host name for http://download.eng.bos.redhat.com/brewroot/vol/rhel-8/packages/mozjs60/60.7.0/2.el8/x86_64/mozjs60-60.7.0-2.el8.x86_64.rpm [Could not resolve host: download.eng.bos.redhat.com]
[FAILED] mozjs60-60.7.0-2.el8.x86_64.rpm: Curl error (6): Couldn't resolve host name for http://download.eng.bos.redhat.com/brewroot/vol/rhel-8/packages/mozjs60/60.7.0/2.el8/x86_64/mozjs60-60.7.0-2.el8.x86_64.rpm [Could not resolve host: download.eng.bos.redhat.com]
Curl error (6): Couldn't resolve host name for http://download.eng.bos.redhat.com/brewroot/vol/rhel-8/packages/mozjs60/60.7.0/2.el8/x86_64/mozjs60-60.7.0-2.el8.x86_64.rpm [Could not resolve host: download.eng.bos.redhat.com]
...finished running dnf, exit code=1