5.3. Unable to open /etc/scl/prefixes/software_collection_name

This error message can be caused by using incorrect arguments with the scl command you are calling. Check the scl command is correct and that you have not mistyped any of the arguments.
The same error message can also be caused by a missing Software Collection. Ensure that the software_collection_name Software Collection is properly installed on the system. For more information, see Section 1.5, “Listing Installed Software Collections”.