Hints for remmina in main

Warnings

• metainfo-validation-issue
  Validation of the metainfo file found a problem: The screenshot does not contain any images.
• metainfo-validation-issue
  Validation of the metainfo file found a problem: The screenshot does not contain any images.
• metainfo-validation-issue
  Validation of the metainfo file found a problem: The screenshot does not contain any images.
• metainfo-validation-issue
  Validation of the metainfo file found a problem: The screenshot does not contain any images.
• metainfo-validation-issue
  Validation of the metainfo file found a problem: The screenshot does not contain any images.
• metainfo-validation-issue
  Validation of the metainfo file found a problem: The screenshot does not contain any images.
• metainfo-validation-issue
  Validation of the metainfo file found a problem: The screenshot does not contain any images.
• screenshot-download-error
  Error while downloading screenshot from 'https://freerdp.github.io/Remmina/images/appdata/main-en.png': HTTP request returned status code 404 (Not Found)
  This might be a temporary server issue.
• screenshot-download-error
  Error while downloading screenshot from 'https://freerdp.github.io/Remmina/images/appdata/main-it.png': HTTP request returned status code 404 (Not Found)
  This might be a temporary server issue.