InvalidCastException in SimpleStorage.ReadFromDisk()

[bnoffer]

Describe the bug
Stack Trace copied from client Sentry.io Event Report

To Reproduce
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4. See error

Expected behavior
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Additional context
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void SimpleStorage.ReadFromDisk()
new SimpleStorage()
SimpleStorage SimpleStorage.get_Instance()
new MatomoAnalytics(string apiUrl, int siteId)
MatomoAnalytics App.get_MatomoAnalytics()