Analyse following RPM build log snippet. Describe contents accurately, without speculation or suggestions for resolution.            
Your analysis must be as concise as possible, while keeping relevant information intact.
Snippet: 
Problem: package rpm-build-4.19.91-1.fc40.x86_64 requires rpm = 4.19.91-1.fc40, but none of the providers can be installed
  - package rpm-4.19.91-1.fc40.x86_64 conflicts with redhat-rpm-config < 290-1 provided by redhat-rpm-config-288-1.fc40.noarch
  - cannot install the best candidate for the job
Message indicating that the requested package rpm-4.19.91-1.fc40.x86_64 can not be installed due to conflicts with another, already present, package.