React Packager 0.44.0 - react-native

Question

First of all I am new to react native platform and I am developing an app but I am facing one issue when I run my application after changes made in classes.
I am posting my logs below, Thank you for your help folks....
index.android.js (loads successfully but app do not run)
SyntaxError: Unexpected end of JSON input
at parse (<anonymous>)
at <anonymous>
at process._tickCallback (internal/process/next_tick.js:188:7)
SyntaxError: Unexpected end of JSON input
at parse (<anonymous>)
at <anonymous>
at process._tickCallback (internal/process/next_tick.js:188:7)
{
Error: write EPIPE
at _errnoException (util.js:1022:11)
at Socket._writeGeneric (net.js:767:25)
at Socket._write (net.js:786:8)
at doWrite (_stream_writable.js:387:12)
at writeOrBuffer (_stream_writable.js:373:5)
at Socket.Writable.write (_stream_writable.js:290:11)
at Socket.write (net.js:704:40)
at Socket.Writable.end (_stream_writable.js:553:10)
at Socket.end (net.js:496:31)
at Promise.resolve.then.then.then.catch.then.message
(E:\FinalDownload\takeawaymobileapp\node_modules\react-native\packager\src\Server\symbolicate\worker.js
:35:33) code: 'EPIPE', errno: 'EPIPE', syscall: 'write' }