Ignore Missing Source Images
ignore_missing_images: [development, testing]
Normally, JPT will raise an error if a source image is missing, causing the entire site build to fail. This setting allows you to bypass this behavior and continue the build, either for certain build environments or all the time.
I highly encourage you to set this to
development, and set the Jekyll build environment to
production when you build for production so you don't shoot yourself in the foot. You can read more about Jekyll environments here.