This is the error message bit.ly returns when there is an error shortening a URL with their service. Generally, this means there is a problem / error with the link passed to bit.ly for shortening. This can be invalid characters in the URL, line breaks in the URL, or other issues that will cause bit.ly to fail when attempting to shorten the link.
What does this mean: "Failed to shorten item URL: INVALID_URL"?
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