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Application ID: DD9FC30D-3A6F-AB4C-FF9C-24DC92E73100

Cannot read properties of undefined (reading 'Time')
TypeError: Cannot read properties of undefined (reading 'Time')
    at Array.forEach (<anonymous>)
    at e (
    at o (
    at e (
    at l (
    at n.value (
    at n.value (
    at Aa (

Problem description

This error window often occurs in my project but usually goes away after a refresh. It is now not going away and impeding my work.

Steps to reproduce

Please describe steps to reproduce starting from the first action.

  1. open any page in my project on the backendless interface online.

I have found a more specific reason for this error. If I go to most pages in my project, the error will appear but go away after a page refresh. The error will not go away and seems to be causing the initial issue on the cloud services debugging API, specifically one function called “addEvent”


The issue was that my javascript code had a typo when declaring a parameter type. I had something like


  • @param {date/time}

obviously, the type should be “Datetime”.

I would however maybe suggest a better error message for when this happens.