Firefox 89.0b3 (64-Bit)
Windows 10 x64
Character Sheet Template: No

Uncaught TypeError: (void 0) is undefined

app.js:595:20263
    zoomSliderMenuCoordinator https://app.roll20.net/assets/app.js?1619021958:595
    setZoom https://app.roll20.net/assets/app.js?1619021958:596
    r https://app.roll20.net/assets/base.js?1619021697:6


53x:
Error: Promised response from onMessage listener went out of scope 53 background.js:841:170

Uncaught TypeError: t.$iframe is null
    addBlob https://app.roll20.net/assets/app.js?1619021958:611
    _getLatestBlob https://app.roll20.net/assets/app.js?1619021958:603
    Zb https://app.roll20.net/assets/firebase.2.4.0.js:201
    gc https://app.roll20.net/assets/firebase.2.4.0.js:52
    cc https://app.roll20.net/assets/firebase.2.4.0.js:30
    dc https://app.roll20.net/assets/firebase.2.4.0.js:29
    af https://app.roll20.net/assets/firebase.2.4.0.js:218
    Uh https://app.roll20.net/assets/firebase.2.4.0.js:183
    Ld https://app.roll20.net/assets/firebase.2.4.0.js:188
    Ld https://app.roll20.net/assets/firebase.2.4.0.js:178
    Gh https://app.roll20.net/assets/firebase.2.4.0.js:176
    yh https://app.roll20.net/assets/firebase.2.4.0.js:170
    onmessage https://app.roll20.net/assets/firebase.2.4.0.js:169
app.js:611:1395
    addBlob https://app.roll20.net/assets/app.js?1619021958:611
    _getLatestBlob https://app.roll20.net/assets/app.js?1619021958:603
    Zb https://app.roll20.net/assets/firebase.2.4.0.js:201
    gc https://app.roll20.net/assets/firebase.2.4.0.js:52
    cc https://app.roll20.net/assets/firebase.2.4.0.js:30
    dc https://app.roll20.net/assets/firebase.2.4.0.js:29
    af https://app.roll20.net/assets/firebase.2.4.0.js:218
    Uh https://app.roll20.net/assets/firebase.2.4.0.js:183
    Ld https://app.roll20.net/assets/firebase.2.4.0.js:188
    <anonym> self-hosted:1178
    Ld https://app.roll20.net/assets/firebase.2.4.0.js:178
    Gh https://app.roll20.net/assets/firebase.2.4.0.js:176
    yh https://app.roll20.net/assets/firebase.2.4.0.js:170
    onmessage https://app.roll20.net/assets/firebase.2.4.0.js:169

My memory might trick me, but the page was much faster in the past (1-2 years ago). Not really much fun to work with it anymore. My hardware definetly is better than back then.