pwa-studio: [bug]: Upward crashes on Image Optimization

Describe the bug When turning on the PWA Image optimization, the Upward Server crashes as soon as someone tries to load any image.

Error log shows:

events.js:174
      throw er; // Unhandled 'error' event
      ^
Error: Input buffer contains unsupported image format
Emitted 'error' event at:
    at sharp.pipeline (/usr/src/app/node_modules/sharp/lib/output.js:707:18)
error Command failed with exit code 1.

Expected behavior Image is shown to the customer and Optimized for the PWA.

Please complete the following device information:

• PWA Studio Version: 6.0.1
• NPM version npm -v: v6.13.4
• Node Version node -v: v10.18.1

Please let us know what packages this bug is in regards to:

• venia-concept
• venia-ui
• pwa-buildpack
• peregrine
• pwa-devdocs
• upward-js
• upward-spec
• create-pwa