Save button broken?

[keflavich]

I tried making a simple one-slide tour, and the 'save' button did nothing. The developer console shows:

angular.js:13920 TypeError: Cannot read properties of undefined (reading 'toString')
    at Eh._saveToXml (wwtsdk.min.js:2:860801)
    at Lu.getTourXML (wwtsdk.min.js:2:1040018)
    at Lu.saveToBlob (wwtsdk.min.js:2:1038489)
    at $scope.saveTour (wwtwebclient.min.js?v=12aa0ec:7:161815)
    at fn (eval at compile (angular.js:14817:15), <anonymous>:4:215)
    at b (angular.js:15906:18)
    at e (angular.js:25885:17)
    at m.$eval (angular.js:17682:16)
    at m.$apply (angular.js:17782:20)
    at HTMLAnchorElement.<anonymous> (angular.js:25890:17)

(is there another repo to report issues with 'tour' creation? Also is the .wtt format described somewhere?)