web access - What could cause an "Uncaught Throw[$Failed,CURLLink`Utilities`Exception] returned to top level." error message?

I am running a program in Mathematica that uses web browser automation, and is also connected to my email account. The program runs fine for a while, but after a few hours, I end up getting the following message:

Uncaught Throw[$Failed,CURLLink`Utilities`Exception] returned to top level.

The output that I get with the error message is the following:

Hold[Throw[$Failed, CURLLink`Utilities`Exception]]

I have done some searching on this site and others, but can't seem to find anything very related, except for this post:

Error "Throw::nocatch: Uncaught Throw[False] returned to top level" given each time I open a new Mathematica 10.1 session

Do these two cases seem similar enough that I should be able to resolve this issue by following the same steps provided by Ilian in the other post? Thanks!

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