Android Question Error java.lang.NoClassDefFoundError: Failed resolution of: Lcom/google/gson/Gson;

[mgh]

Hello friends, please help me. This error occurs to me, what should I do?

 

[DonManfred]

Start with posting the error as TEXT as it is text. Right click to copy.
Guess you are missing adding a reference.
What libraries are you using?

 

[mgh]

Start with posting the error as TEXT as it is text. Right click to copy.
Guess you are missing adding a reference.
What libraries are you using?

I use this library