Hi @KylieCOOKE,

I would say that Canvas Commons is the area you'd want to use for this task.  If you're getting an error trying to share to Commons or getting to Commons in general, I'd definitely recommend contacting Canvas support through whatever methods are available to you to report that and hopefully get the underlying problem resolved.  I haven't ever seen Canvas Commons give an error like that at my institution, so other than contacting support, I don't have have any other ideas to even suggest right now.

Let us know if support is able to resolve the error for you.

-Chris