Image column from my Sharepoint list was showing in powerapps "Gallery" and other screens but stopped showing suddenly


These are "Image1", "Image2" ... columns which are of type Thumbnail / Image
In app i am using column "Image1" (internal name "Images") in gallery but its not displaying
If(IsBlank(ThisItem.Images.Small),noimg,ThisItem.Images.Small)

Image columns are not displaying in other screens too

Whats the issue why they are not showing? Any workaround?
Edit:
In the gallery control I used:
First(SharePointList).Images

It does not show the image, which is simply a Thumbnail type of column

I have also tried using Filter to get image column
Filter('SPList', ID = ThisItem.ID).Image2It is giving error "Expected Image value"

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