Error when dragging event

Event calendars & schedulers
1

I’m getting an error when dragging and dropping an event on an EventCalendar. I’m wondering if you have any quick suggestions.

Uncaught TypeError: “start” is read-only
React 29
_onEventDragStop
_onEventDragEnd
_hook
onEnd
w
Cn
T
Cn
_a
_mounted
componentDidMount
invokeLayoutEffectMountInDEV
invokeEffectsInDev
legacyCommitDoubleInvokeEffectsInDEV
commitDoubleInvokeEffectsInDEV
flushPassiveEffectsImpl
flushPassiveEffects
commitRootImpl
commitRoot
performSyncWorkOnRoot
flushSyncWorkAcrossRoots_impl
flushSyncWorkOnAllRoots
processRootScheduleInMicrotask
scheduleImmediateTask
scheduleImmediateTask
ensureRootIsScheduled
scheduleUpdateOnFiber
forceStoreRerender
handleStoreChange

2

Hello @Andrew1 :wave:

Are you using immutable data? - Responsive event calendar documentation for React | Mobiscroll

3

Hi Zsombor,

No, I’m not using the immutable option. Any other quick thoughts? This may be an edge case that is difficult to reproduce.

Andrew

4

Are you referring to the immutable option or data? - I’m asking because if you are using immutable data, you should enable the immutableData option as mentioned in the docs.

If you are not using any immutable data, please share a few lines of code on how you create the data array and how you pass it to the eventcalendar.

5

Hi Zsombor,

The data was indeed immutable, and the new immutableData option was exactly what I needed. Thanks for the quick and on target advice!

Andrew

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