[Solved] Ionic serve error Unexpected token

when i run ionic serve and the app open in browser an error is appears after 1 sec from serve
the error is
Unexpected token } in JSON at position 1375
screen shot of error

my ionic info
@ionic/cli-utils : 1.10.1
ionic (Ionic CLI) : 3.10.1

global packages:

Cordova CLI : 7.0.1

local packages:

@ionic/app-scripts : 2.1.4
Cordova Platforms  : android 6.2.3
Ionic Framework    : ionic-angular 3.6.1


Android SDK Tools : 25.2.3
Node              : v6.10.1
npm               : 3.10.10
OS                : Windows 10

Seems like you are parsing an invalid JSON are you making any api calls ?

I found a solution for this .
the json file of Translation have an error in the end of the file