i have a problem

[fabrixy]

 

Hi, I'm Brazilian so if there's anything wrong with what I'm going to write, I'm sorry. I have a problem that I can not install the forger in version 1.14.3. and this message always appears: Failer to run processor: com.google.gson.JsonParseException: Error parsing arguments in the json version. File is corrupt or its format has changed. See log for more details.

[fabrixy]

 

I did not buy the minecraft. I'm using a pirate, is there a problem?