PWA version is non-operational?

Describe the bug
This app is absolutely non functional when using the browser (tested on Windows desktop / Chrome and iphone mobile browser)

To Reproduce
Steps to reproduce the behavior:

1. Go to https://beep.modus.app/ (per top of github repo

BEEP Account Security Scanner - Detect if your credentials have been compromised (Vue + Ionic) https://beep.modus.app

2. Note the absolutely blank screen.
3. Open up chrome developer tools. Note the console errors.
4. Console error follows:

ionic-vue.esm.js:191 Uncaught TypeError: (void 0) is not a function
at SA (ionic-vue.esm.js:191)
at Object.VA [as install] (ionic-vue.esm.js:556)
at Function.t.use (vue.esm.js:4843)
at Module.56d7 (main.js:25)
at s (bootstrap:88)
at Object.0 (bootstrap:262)
at s (bootstrap:88)
at n (bootstrap:45)
at bootstrap:262
at bootstrap:262
SA @ ionic-vue.esm.js:191
VA @ ionic-vue.esm.js:556
t.use @ vue.esm.js:4843
56d7 @ main.js:25
s @ bootstrap:88
0 @ bootstrap:262
s @ bootstrap:88
n @ bootstrap:45
(anonymous) @ bootstrap:262
(anonymous) @ bootstrap:262

Expected behavior
Something, anything.

Screenshots or videos
Blank screen. I can see the cute red B favicon in the browser tab. Lots of content in header, lots of network downloads. All downloads (mostly chunks of .js content) seem to be successful.

Desktop (please complete the following information):

• OS: Windows 10 home ver 1909, Chrome browser and iphone Xr ios13.3 / browser . Same result. blank screen.
• I also tried this on Microsoft Edge on desktop. Still a fail.

What do you guys see? Am I doing this correctly?

Start by reproducing the blank screen at https://beep.modus.app/ in Chrome or Edge and inspect the reported console stack, especially main.js:25 and the ionic-vue.esm.js installation path. Confirm the cause of the TypeError and verify that the application renders in the affected desktop and iPhone browser environments.