The application does not compile.

Question

when the application starts an error

package de.hdodenhof.circleimageview does not exist

and

cannot find symbol class CircleImageView

I can not understand what the problem is

You are clearly hinted that there is no file de\hdodenhof\circleimageview.java or there is something wrong (for example, the class name is incorrectly written).
if there is such a class / package, check if there are Russian letters “a”, “s”, “e”, “o” by chance in its name
You are not connected or somehow not connected to this one here: github.com/hdodenhof/CircleImageView Show a build-gradle which describes the dependencies of your application

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