Reporting a Simple File Manager Application error: Files that are in SD can not be copied

Expected behavior

Hope to copy files that are in sd card can work normally. And can enjoy by it

Actual behavior

In fact, Copy files on sd card does not work. You can try it yourself with android device 4.4.4. So that this bug can be approve

How to reproduce

• Download the Application
  
• Launch App
  
• Click on internal, then appear Internal, Sd, Root
  
• Then select Sd
  
• please find the file you want to copy
  
• Then the press long on the file , and select Option
  
• Then select Copy to
  
• then appear internal, Sd, Root
  
• Then select Sd
  
• There will see an error.
  

• Device used: Samsung Grand prime SM-G530
  
  
  

• Operating System: Android version 4.4.4
  
  
  
• Application version: 3.3.3
  
  

Recording Of The Bug