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Errors

• metainfo-license-invalid
  The metainfo file does not seem to be licensed under a permissive license. Valid permissive licenses include FSFAP, CC0-1.0 or MIT. Permissive licenses are required to allow distributors to include the metadata in mixed data collections without the risk of license violations due to mutually incompatible licenses. If you think this message is an error and 'GPL-2.0' is actually valid, please file a bug against AppStream.
• metainfo-no-summary
  Component does not contain a short summary. Ensure that the components metainfo file has a summary tag, or that its .desktop file has a Comment= field set.
  More information can be found in the Desktop Entry specification and the MetaInfo specification.