Having trouble creating a swipe map, it worked great at first but then suddenly stopped working and when I tried to open it, it would give me the following error. I decided to delete the app and re-make it but now the Swipe map builder won't let me build it but gives me the following error again. Searched here but haven't been able to find an answer. It is based on the web map: 'EXLU vacant' in my content.
Any suggestions? it would seem that there is a problem with my web map? but it loads fine on itself.
many thanks in advance!