Couldn't connect to the Box API due to a network error : Connection reset

I am using box API to upload file to Box from my application. Previously it was working fine. But now it gives error.

Could someone please help me to resolve this issue? Thanks in advance.

Code Producing Error:

URL url = new URL("https://api.box.com/2.0/users/me?fields=id,name,login,role");
BoxAPIRequest request = new BoxAPIRequest(api, url, "GET");
BoxJSONResponse response = (BoxJSONResponse) request.send();

Error Details:

Message:Couldn't connect to the Box API due to a network error.com.box.sdk.BoxAPIException: Couldn't connect to the Box API due to a network error.
at com.box.sdk.BoxAPIRequest.writeBody(BoxAPIRequest.java:332)
at com.box.sdk.BoxAPIRequest.trySend(BoxAPIRequest.java:401)
at com.box.sdk.BoxAPIRequest.send(BoxAPIRequest.java:221)
at com.box.sdk.BoxAPIRequest.send(BoxAPIRequest.java:196)
at com.box.sdk.BoxAPIConnection.refresh(BoxAPIConnection.java:508)
at com.box.sdk.BoxAPIConnection.lockAccessToken(BoxAPIConnection.java:639)
at com.box.sdk.BoxAPIRequest.trySend(BoxAPIRequest.java:374)
at com.box.sdk.BoxAPIRequest.send(BoxAPIRequest.java:221)
at com.box.sdk.BoxAPIRequest.send(BoxAPIRequest.java:196)
at com.ibm.gsar.util.BoxFileUploadUtility.UploadToBox(BoxFileUploadUtility.java:217)
at com.ibm.gsar.controller.abb.connections.FilesController.uploadFileToBox(FilesController.java:167)
at com.ibm.gsar.controller.abb.connections.FilesController.uploadFile(FilesController.java:144)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:60)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
at java.lang.reflect.Method.invoke(Method.java:611)
at org.apache.el.parser.AstValue.invoke(AstValue.java:159)
at org.apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:276)
at org.apache.myfaces.view.facelets.el.ContextAwareTagMethodExpression.invoke(ContextAwareTagMethodExpression.java:94)
at org.primefaces.component.fileupload.FileUpload.broadcast(FileUpload.java:321)
at javax.faces.component.UIViewRoot._broadcastAll(UIViewRoot.java:1041)
at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:278)
at javax.faces.component.UIViewRoot._process(UIViewRoot.java:1415)
at javax.faces.component.UIViewRoot.processDecodes(UIViewRoot.java:772)
at org.apache.myfaces.lifecycle.ApplyRequestValuesExecutor.execute(ApplyRequestValuesExecutor.java:38)
at org.apache.myfaces.lifecycle.LifecycleImpl.executePhase(LifecycleImpl.java:171)
at org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:189)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1694)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1635)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:149)
at org.primefaces.webapp.filter.FileUploadFilter.doFilter(FileUploadFilter.java:97)
at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:190)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:125)
at com.ibm.gsar.filter.GDAWelcomeFilter.doFilter(GDAWelcomeFilter.java:128)
at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:190)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:125)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain._doFilter(WebAppFilterChain.java:80)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:908)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:965)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:508)
at com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.handleRequest(ServletWrapperImpl.java:181)
at com.ibm.ws.webcontainer.servlet.CacheServletWrapper.handleRequest(CacheServletWrapper.java:91)
at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:879)
at com.ibm.ws.webcontainer.WSWebContainer.handleRequest(WSWebContainer.java:1592)
at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:191)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:454)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewRequest(HttpInboundLink.java:516)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.processRequest(HttpInboundLink.java:307)
at com.ibm.ws.http.channel.inbound.impl.HttpICLReadCallback.complete(HttpICLReadCallback.java:84)
at com.ibm.ws.ssl.channel.impl.SSLReadServiceContext$SSLReadCompletedCallback.complete(SSLReadServiceContext.java:1820)
at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:175)
at com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217)
at com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.java:161)
at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:138)
at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:204)
at com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:775)
at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:905)
at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1662)
Caused by: java.net.SocketException: Connection reset
at java.net.SocketInputStream.read(SocketInputStream.java:180)
at com.ibm.jsse2.c.a(c.java:20)
at com.ibm.jsse2.c.a(c.java:188)
at com.ibm.jsse2.SSLSocketImpl.a(SSLSocketImpl.java:44)
at com.ibm.jsse2.SSLSocketImpl.h(SSLSocketImpl.java:344)
at com.ibm.jsse2.SSLSocketImpl.a(SSLSocketImpl.java:573)
at com.ibm.jsse2.SSLSocketImpl.startHandshake(SSLSocketImpl.java:173)
at com.ibm.net.ssl.www2.protocol.https.c.afterConnect(c.java:191)
at com.ibm.net.ssl.www2.protocol.https.d.connect(d.java:28)
at sun.net.www.protocol.http.HttpURLConnection.getOutputStream(HttpURLConnection.java:1087)
at com.ibm.net.ssl.www2.protocol.https.b.getOutputStream(b.java:29)
at com.box.sdk.BoxAPIRequest.writeBody(BoxAPIRequest.java:321)
... 58 more