I have no idea why this issue is occurring, as I have previously had no issues adding links to text in this document before. I update it every year for a sports-tracking related hobby, and have never seen this issue.
If anyone could shed some light on or help me troubleshoot this issue, I would really appreciate it.
edit upon suggestion by @ale, Whenever I try and create hyperlinked text in one of my google docs, the text just becomes invisible. It appears to just be this specific document, and I don't know what happened or if I did something.