Cant Launch the Game on Multiple Platforms.

When using the original Minecraft Launcher, I would try to launch the game and although it would show in my task manager it would never show up on screen, (hasnt since i bought it like 2 months ago). 

 

So I moved to a different launcher, Tlauncher, which still launches the game however minecraft crashes while launching, and this is the error i recieve:

 

Caused by: com.google.gson.JsonSyntaxException: com.google.gson.stream.MalformedJsonException: Use JsonReader.setLenient(true) to accept malformed JSON at line 1 column 3 path $.

 

Ive seen another error on this site with this however it was not resolved so im posting it again.