catch ClientError and continue during token requests
catch ClientError and continue during token requests

Really, we should be filtering out autograph servers from the get_token
server list. However, this fix should allow us to move on to the next
suitable server.

escapewindow/signingscript,escapewindow/signingscript,escapewindow/signingscript,escapewindow/signingscript,escapewindow/signingscript,escapewindow/signingscript