OS2.jugend: Fehlermeldung wg. fehlender Daten beim Erstzugriff

[Eselce]

Nach Neuinstallation ohne vorherige gespeicherte Daten erscheint folgende Fehlermeldung (Dialog) auf der Konsole:

[1] [undefined] OS2.jugend (0.74+lib-inl): Cannot read properties of undefined (reading 'Item')
showAlert @ userscript.html?name=OS2.jugend.user.js:2106
showException @ userscript.html?name=OS2.jugend.user.js:2127
defaultCatch @ userscript.html?name=OS2.jugend.user.js:2158
Promise.catch (async)
(anonymous) @ userscript.html?name=OS2.jugend.user.js:7274
Promise.then (async)
run @ userscript.html?name=OS2.jugend.user.js:7267
(anonymous) @ userscript.html?name=OS2.jugend.user.js:12035
St @ VM225:9
(anonymous) @ userscript.html?name=OS2.jugend.user.js:1
window.__f__ldxyblzg.xs @ userscript.html?name=OS2.jugend.user.js:1
St @ VM225:9
n @ VM225:71
(anonymous) @ VM225:74
p @ VM225:68
Mt @ content.js:8
m @ content.js:53
d @ content.js:55
send @ content.js:55
(anonymous) @ content.js:40
(anonymous) @ content.js:19
setTimeout (async)
(anonymous) @ content.js:19
Ln.addEventListener.Et.capture @ content.js:1

[2] TypeError: Cannot read properties of undefined (reading 'Item')
    at getOptName (userscript.html?name=OS2.jugend.user.js:5023:53)
    at checkOpt (userscript.html?name=OS2.jugend.user.js:4856:20)
    at getOptValue (userscript.html?name=OS2.jugend.user.js:5069:9)
    at getSharedConfig (userscript.html?name=OS2.jugend.user.js:6875:46)
    at initOptions (userscript.html?name=OS2.jugend.user.js:6906:36)
    at startOptions (userscript.html?name=OS2.jugend.user.js:7138:22)
    at async Main.handlePage (userscript.html?name=OS2.jugend.user.js:7248:40)
    at async Main.run (userscript.html?name=OS2.jugend.user.js:7267:36)

showAlert @ userscript.html?name=OS2.jugend.user.js:2109
showException @ userscript.html?name=OS2.jugend.user.js:2127
defaultCatch @ userscript.html?name=OS2.jugend.user.js:2158
Promise.catch (async)
(anonymous) @ userscript.html?name=OS2.jugend.user.js:7274
Promise.then (async)
run @ userscript.html?name=OS2.jugend.user.js:7267
(anonymous) @ userscript.html?name=OS2.jugend.user.js:12035
St @ VM225:9
(anonymous) @ userscript.html?name=OS2.jugend.user.js:1
window.__f__ldxyblzg.xs @ userscript.html?name=OS2.jugend.user.js:1
St @ VM225:9
n @ VM225:71
(anonymous) @ VM225:74
p @ VM225:68
Mt @ content.js:8
m @ content.js:53
d @ content.js:55
send @ content.js:55
(anonymous) @ content.js:40
(anonymous) @ content.js:19
setTimeout (async)
(anonymous) @ content.js:19
Ln.addEventListener.Et.capture @ content.js:1

[1] SCRIPT ERROR OS2.jugend (0.74+lib-inl) ([undefined] OS2.jugend (0.74+lib-inl): Cannot read properties of undefined (reading 'Item'))
(anonymous) @ userscript.html?name=OS2.jugend.user.js:7289
Promise.then (async)
run @ userscript.html?name=OS2.jugend.user.js:7278
(anonymous) @ userscript.html?name=OS2.jugend.user.js:12035
St @ VM225:9
(anonymous) @ userscript.html?name=OS2.jugend.user.js:1
window.__f__ldxyblzg.xs @ userscript.html?name=OS2.jugend.user.js:1
St @ VM225:9
n @ VM225:71
(anonymous) @ VM225:74
p @ VM225:68
Mt @ content.js:8
m @ content.js:53
d @ content.js:55
send @ content.js:55
(anonymous) @ content.js:40
(anonymous) @ content.js:19
setTimeout (async)
(anonymous) @ content.js:19
Ln.addEventListener.Et.capture @ content.js:1