Cannot read property isUnavailable of null TypeError: Cannot read property isUnavailable of null

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  Hi,  I am using Mendix 7.22. I have a Data Grid, of entity 'Note'. The bottom is a Data View listens to the 'Note' Data Grid. When I select one row, and delete it. It is actually deleted.  However, it always pop up an error: An error has occurred, please contact your system administrator.   Cannot read property 'isUnavailable' of null TypeError: Cannot read property 'isUnavailable' of null     at E.(anonymous function).O.callback (http://localhost:8080/mxclientsystem/mxui/mxui.js?636825457383538779:36:90758)     at E.(anonymous function).O._runSubscription (http://localhost:8080/mxclientsystem/mxui/mxui.js?636825457383538779:36:62988)     at E.(anonymous function).O.e.callback.e.val.n.callback (http://localhost:8080/mxclientsystem/mxui/mxui.js?636825457383538779:36:62398)     at Object.callback (http://localhost:8080/mxclientsystem/mxui/mxui.js?636825457383538779:67:163463)     at http://localhost:8080/mxclientsystem/mxui/mxui.js?636825457383538779:67:164899     at new Promise (<anonymous>)     at http://localhost:8080/mxclientsystem/mxui/mxui.js?636825457383538779:67:164815     at Array.map (<anonymous>)     at h (http://localhost:8080/mxclientsystem/mxui/mxui.js?636825457383538779:67:164792)     at http://localhost:8080/mxclientsystem/mxui/mxui.js?636825457383538779:67:164597   Anyone know what causes this error?   Thanks Ping
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8 answers
4

I was able to reproduce this in a test project and I’ve filed a ticket with Mendix.

Ticket Number: 80544

 

The way I was able to reproduce this was deleting an object that was displayed in a dataview over an association to another dataview that was listening to a grid.

 

Edit: Support just got back to me and they said a fix for this will be in 7.23.2. A release date has not been made yet.

 

 

 

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2

I have the same in 7.23. What is the status of the ticket?

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1

We are also experiencing this in 7.22 and 7.23 when opening pages via microflows. We do not get this message again after adding a Close Page in the microflow, before opening the new page.

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0

Status of the bug would be great - as i have the same in 7.23 ... 
 

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0

Same problem here. Every single time… what can I do?

Any update would be much appreciated! 

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0

Have same issue in 7.22.2. Is there an ETA on delivering a fix?

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0

Facing the same issue in 7.23.1

When I select one row, and delete it. It’s getting deleted. 

But, it’s always throwing pop up error as:  An error has occurred, please contact your system administrator.

LogMessage:

Cannot read property 'isUnavailable' of null TypeError: Cannot read property 'isUnavailable' of null
    at E.(anonymous function).O.callback (http://localhost:8089/mxclientsystem/mxui/mxui.js?636869675730442143:52:98725)
    at E.(anonymous function).O._runSubscription (http://localhost:8089/mxclientsystem/mxui/mxui.js?636869675730442143:52:75569)
    at E.(anonymous function).O.e.callback.e.val.n.callback (http://localhost:8089/mxclientsystem/mxui/mxui.js?636869675730442143:52:75025)
    at Object.callback (http://localhost:8089/mxclientsystem/mxui/mxui.js?636869675730442143:79:27704)
    at http://localhost:8089/mxclientsystem/mxui/mxui.js?636869675730442143:46:91688
    at Array.map (<anonymous>)
    at http://localhost:8089/mxclientsystem/mxui/mxui.js?636869675730442143:46:91643
    at $ (http://localhost:8089/mxclientsystem/mxui/mxui.js?636869675730442143:46:6455)
    at n (http://localhost:8089/mxclientsystem/mxui/mxui.js?636869675730442143:46:6231)
    at http://localhost:8089/mxclientsystem/mxui/mxui.js?636869675730442143:20:8441

 

Anyone know what causes this error?

 

Thanks

Srilatha

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0

In my case it happened when I had the following object model:

 

In my page I had conditional visiblity on all three entities. When switching of the deletion of Content when deleting TableofContent the error happened. I have added the deletion of the content when deleting the tableof content and than the error doesn't popup.

I hope this will help in solving your problems...

 

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