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Well, I am creating camera service and after step 7 , when I have to get one result, I am getting completely different, is it usual practices when tutorial made with mistakes? I am asking because its not first time you publishing wrong documents.
Iam used https://devcenter.appery.io/tutorials... , please fix tutorial and let us enjoy.
and what I have : 
Hello Fedora,
Could you please clarify have you tried to finish creating an app with this tutorial? These triangles aren't mistakes, they are warnings.
But don't you pay attention the script is different?
Tested , its giving transparent page in test mode
Hello Fedora,
Thank you for letting us know.
We have updated tutorial, please try now.
We are working to improve our documentation.
I started doing again, here, that gives out to me 
according to documents and the picture has to look on another. as I can correctly arrange a button and an image
Set Block to True in Button Properties.
I made everything as it is written according to documents here that turned out 
I made the test with QR Reader it turned out nothing.
what do I do not correctly? you can explain pls