c# Type exists in both appdata and dll file
<p>Hey I started a college project in college and decided to try working on it at home.</p>

<p>I keep getting the following error however whenever I try to use my Customer class. </p>

<blockquote>
  <p>The type 'CustomerBank' exists in both 'C:\Users\Cara\AppData\Local\Temp\Temporary ASP.NET Files\atmv1\95e5fad3_shadow\fe1b0109\8108\App_Web_customer.master.cdcab7d2.rnqtqpxh.dll' and 'App_Code'   C:\Users\Cara\Desktop\ATMv1\Customer\CustomerHome.aspx.cs   12  9   C:...\ATMv1\</p>
</blockquote>

<p><a href="https://i.stack.imgur.com/4Tgxg.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/4Tgxg.png" alt="enter image description here"></a></p>

<p>I have tried deleting the dll. Using both 2012 and 2015 of visual studio. I even tried renaming Customer to CustomerBank but as you can see it is still giving the error and I am at lost. I also tried it on two separate machines outside of college. </p>