Hi @A_Geek_Learner , Where did you have this excel file? I mean does it uploaded to OneDrive For Business or SharePoint Online? Also, does the images are also uploaded to SharePoint list?
If you check this https://powerusers.microsoft.com/t5/Building-Power-Apps/Images-from-excel-files/td-p/574404
It has mentioned that :
Images stored inside Excel files cannot be displayed in PowerApps. Instead, you must store the images on your OneDrive.
Then copy the link to the image into a column called ImageColumnName in your Excel table. Links should be in this format.
https://my-sharepoint.yourcompany.com/something/something/image.jpg
When you place an Image control in your gallery change the Image property to this code and it will show the picture.
ThisItem.ImageColumnName
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I hope this helps.
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Thanks,
ANB