Parsing error Appsheet app + support form bug

[Nikita_Filatov]

Hi i have a issue to load my app got this error:

this is logs from console:

app-main.js?v='20210729'.1:1 Uncaught Error: Error initializing AppModel: __:parsererror
    at i (app-main.js?v='20210729'.1:1)
    at app-main.js?v='20210729'.1:1
    at app-main.js?v='20210729'.1:1
    at app-main.js?v='20210729'.1:1
    at Object.error (app-main.js?v='20210729'.1:1)
    at s (app-main.js?v='20210729'.1:1)
    at Object.fireWith [as rejectWith] (app-main.js?v='20210729'.1:1)
    at k (app-main.js?v='20210729'.1:1)
    at XMLHttpRequest.<anonymous> (app-main.js?v='20210729'.1:1)

app-main.js?v='20210729'.1:1 Uncaught TypeError: Cannot read property 'RootPage' of undefined
    at Object.onBackButtonTap (app-main.js?v='20210729'.1:1)
    at n.value (app-main.js?v='20210729'.1:1)
    at Object.m (app-main.js?v='20210729'.1:1)
    at w (app-main.js?v='20210729'.1:1)
    at app-main.js?v='20210729'.1:1
    at k (app-main.js?v='20210729'.1:1)
    at A (app-main.js?v='20210729'.1:1)
    at C (app-main.js?v='20210729'.1:1)
    at M (app-main.js?v='20210729'.1:1)
    at Tn (app-main.js?v='20210729'.1:1)
    at ue (app-main.js?v='20210729'.1:1)
    at Mn (app-main.js?v='20210729'.1:1)
    at Pn (app-main.js?v='20210729'.1:1)
    at Dn (app-main.js?v='20210729'.1:1)
    at t.unstable_runWithPriority (app-main.js?v='20210729'.1:1)
    at Za (app-main.js?v='20210729'.1:1)

When i tried to write in support form got this error:
(i cant put screen with error coz u allow me add one media item)

Please help to fix this. We have core buisnes process integrated with AppSheet and have to fix this ASAP