Error when posting comment

Tried to comment on a video, and instead it took me to a page with the following message:

{"success":0,"errMessage":"This value should not be blank.","trackingToken":null,"csrfToken":"LyodpLE2hUUhttNIjPXiXaaJKbVCrDynm5SQkItP8A0GPq7tjB3KSF14Rw==","csrfTokenId":"61362b7ad6624"}

I went back in the browser and retyped it without issue.