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: 
WARNING: The found license expression 'AGPL-3' is not a valid SPDX expression. Inspect the project manually to find the license

License of the project is not in SPDX format. Please change name of the license based on the SPDX sources.