Unknown error after building apk, attempt to get length of null array

I understand that this Was not worked but you can try with file tools extension if it would work for you

I cannot install the extension

Try by asking for permission

Which one you download as image says extension upgraded but there is no file tools extension

But if permission is not granted the will is shows images in companion

Have you downloaded this

Can you clarify this what you mean

Go to your app settings and check if permission is granted

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yes downloaded. not installed

Assume hi didn’t asked for storage permission and he test his app with companion will he get the results?

Yes he will

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Ok because companion has permission to access storage

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Try to ask for permission to access storage as boban says

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thanks you were right

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Thanks @Boban I learned something too

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How to fix it?

But if you want this to happen automatically, then you have to ask for permission, how to ask for permission

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Although @Groza’s problem has been solved, I would still like to mention here that FileList method of TaifunFile extension may return null object if no file is found instead of an empty array.
@Taifun would like to fix it if issue exists.

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