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No events, "Cannot create property 'CPlastFetched' on string" on refresh

This has happened a couple of times over the last year: my calendar events (in the popup and new tab views) have disappeared, and clicking the refresh button shows an error:

Cannot create property 'CPlastFetched' on string '{"calendarLocale":"en","showDeclinedEvents":true,"hideWeekends":false,"weekStart":"0","timeZone":"America/Vancouver","format24HourTime":false,"dateFieldOrder":"MDY","defaultEventLength":"60","email":"me@gmail.com"}' 

I recall fixing it once by messing around with the view settings, changing the number of visible days/weeks and such. Haven't had any luck with that this time. Any ideas? TIA


  • JS console shows the error happening twice: popup.js:139 and extensionCommon.js:247.

  • Can you send me the background error logs:


  • Can do! Apologies for the delay.

    bg onMessage: pollServer
    common.js:1685 initMisc Sat Sep 09 2023 13:25:51 GMT-0700 (Pacific Daylight Time)
    common.js:1703 initWindowBGVars
    checkerPlusForCalendar.js:3144 allDayVStimeSpecific: 0.347900390625 ms
    checkerPlusForCalendar.js:3977 sortevents: 1.010986328125 ms
    common.js:1725 mergeevents: 1.718994140625 ms
    common.js:1726 feeds: 36.623046875 ms
    background.js:1723 pollServer
    background.js:443 Fetching colors...
    background.js:1190 Fetching calendarlist
    common.js:768 error ensureWatchCalendarSettings: TypeError: Cannot create property 'watchResponse' on string '{"calendarLocale":"en","showDeclinedEvents":true,"hideWeekends":false,"weekStart":"0","timeZone":"America/Vancouver","format24HourTime":false,"dateFieldOrder":"MDY","defaultEventLength":"60","email":"emcniece@gmail.com"}'
    logError @ common.js:768
    fetchCalendarSettings @ background.js:395
    await in fetchCalendarSettings (async)
    pollServer @ background.js:1759
    await in pollServer (async)
    (anonymous) @ background.js:3681
    await in (anonymous) (async)
    (anonymous) @ background.js:3752
    background.js:399 Fetching settings
    background.js:3747 TypeError: Cannot create property 'CPlastFetched' on string '{"calendarLocale":"en","showDeclinedEvents":true,"hideWeekends":false,"weekStart":"0","timeZone":"America/Vancouver","format24HourTime":false,"dateFieldOrder":"MDY","defaultEventLength":"60","email":"emcniece@gmail.com"}'
        at fetchCalendarSettings (background.js:407:40)
        at async Promise.all (index 0)
        at async pollServer (background.js:1758:53)
        at async background.js:3681:34
    (anonymous) @ background.js:3747
    await in (anonymous) (async)
    (anonymous) @ background.js:3752
  • Thanks for the logs, so we can temporarily resolve the issue by going into the extension Options .. Admin .. Reset settings to default.

    However, I would be curious if you can replicate the issue, what actions do you take with the extension that you might recall before the issue happens?

  • I've been attempting to reproduce this for a couple months now with no luck, then 2 days ago it happened seemingly at random. I have a suspicion that it might relate to the date and the week/day layout options.

    Resetting to default does solve the problem, though I get the error again if I sign in using Chrome - it seemed to pull my Google Calendar options right away, then clicking the refresh button throws the error.

    I reset defaults again, signed in with Google (not Chrome) and declined to restore my previous settings, now all seems to be well.

    I'll keep an eye out for this in the future, but maybe my settings just got into a weird state. Thanks for the help!

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