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: cannot install the best candidate for the job
  - nothing provides qt5-qtbase(x86-64) = 5.15.11 needed by python3-qt5-base-5.15.10-4.fc38.x86_64 from copr_ba
"python3-qt5-base" dependency "qt5-qtbase v5.15.11" not met.