CodeRunner error, not deploying server code on IntelliJ

Hi to you all,
I’m a new Backendless user and I have some problems during the deploying of my server code on IntelliJ.
I found very nice video tutorial on this link
https://backendless.com/category/server-code/
and I followed it step by step to create the same server code, as show in the tutorial.
While I was deployin my code from the terminal window inside IntelliJ, it occured a strange error which I cannot understand very well.

MacBook-Pro-XXXXX xxxx$ ./CodeRunner.sh 
Listening for transport dt_socket at address: 5005
[INFO] JDK from "JAVA_HOME" - /Library/Java/JavaVirtualMachines/jdk1.8.0_25.jdk/Contents/Home
[INFO] JRE from "JRE_HOME" - /Library/Java/JavaVirtualMachines/jdk1.8.0_25.jdk/Contents/Home
[INFO] CodeRunner(tm) Backendless Debugging Utility
[INFO] Copyright(C) 2016 Backendless Corp. All rights reserved. 
[INFO] Version: 3.0.12 Build date: 20160321-1136
[INFO] CodeRunner session is running for 2 hour and will be terminated on 23:43:20.632[UTC]
[INFO] Registering runner on: 'http://api.backendless.com' with version 'v1'
[INFO] Application ID: ‘xxxxxxxxxx'
[INFO] Secret key: 'xxxxxxxxxx'
Mar 24, 2016 9:43:25 PM org.glassfish.jersey.message.internal.ReaderInterceptorExecutor$TerminalReaderInterceptor aroundReadFrom
SEVERE: MessageBodyReader not found for media type=text/plain; charset=utf-8, type=class com.backendless.coderunner.commons.exception.CodeRunnerException, genericType=class com.backendless.coderunner.commons.exception.CodeRunnerException.
[ERROR] MessageBodyReader not found for media type=text/plain; charset=utf-8, type=class com.backendless.coderunner.commons.exception.CodeRunnerException, genericType=class com.backendless.coderunner.commons.exception.CodeRunnerException.
org.glassfish.jersey.message.internal.MessageBodyProviderNotFoundException: MessageBodyReader not found for media type=text/plain; charset=utf-8, type=class com.backendless.coderunner.commons.exception.CodeRunnerException, genericType=class com.backendless.coderunner.commons.exception.CodeRunnerException.
 at org.glassfish.jersey.message.internal.ReaderInterceptorExecutor$TerminalReaderInterceptor.aroundReadFrom(ReaderInterceptorExecutor.java:225) ~[CodeRunner.jar:na]
 at org.glassfish.jersey.message.internal.ReaderInterceptorExecutor.proceed(ReaderInterceptorExecutor.java:149) ~[CodeRunner.jar:na]
 at org.glassfish.jersey.message.internal.MessageBodyFactory.readFrom(MessageBodyFactory.java:1124) ~[CodeRunner.jar:na]
 at org.glassfish.jersey.message.internal.InboundMessageContext.readEntity(InboundMessageContext.java:853) ~[CodeRunner.jar:na]
 at org.glassfish.jersey.message.internal.InboundMessageContext.readEntity(InboundMessageContext.java:785) ~[CodeRunner.jar:na]
 at org.glassfish.jersey.client.ClientResponse.readEntity(ClientResponse.java:335) ~[CodeRunner.jar:na]
 at org.glassfish.jersey.client.InboundJaxrsResponse$1.call(InboundJaxrsResponse.java:111) ~[CodeRunner.jar:na]
 at org.glassfish.jersey.internal.Errors.process(Errors.java:315) ~[CodeRunner.jar:na]
 at org.glassfish.jersey.internal.Errors.process(Errors.java:297) ~[CodeRunner.jar:na]
 at org.glassfish.jersey.internal.Errors.process(Errors.java:228) ~[CodeRunner.jar:na]
 at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:399) ~[CodeRunner.jar:na]
 at org.glassfish.jersey.client.InboundJaxrsResponse.readEntity(InboundJaxrsResponse.java:108) ~[CodeRunner.jar:na]
 at com.backendless.coderunner.util.CodeRunnerUtil.handleFault(CodeRunnerUtil.java:245) ~[CodeRunner.jar:na]
 at com.backendless.coderunner.util.CodeRunnerUtil.registerCodeRunner(CodeRunnerUtil.java:70) ~[CodeRunner.jar:na]
 at com.backendless.coderunner.LocalCodeRunner.register(LocalCodeRunner.java:117) ~[CodeRunner.jar:na]
 at com.backendless.coderunner.LocalCodeRunner.start(LocalCodeRunner.java:61) ~[CodeRunner.jar:na]
 at com.backendless.coderunner.CodeRunnerLoader.launch(CodeRunnerLoader.java:48) [CodeRunner.jar:na]
 at com.backendless.coderunner.CodeRunnerLoader.main(CodeRunnerLoader.java:33) [CodeRunner.jar:na]
[INFO] Debugging Utility disconnected successfully
[INFO] Thank you for using Backendless

Could you tell me how I can fix such a problem, please?
Thank you in advance for your help!

Hi, Starscream,
That’s a very strange error. Looks like you are trying to register Coderunner with media type=text/plain;
while Coderunner is always registered with application/json.
Can you show us the exact steps to reproduce this issue? If you have a project that reproduces it - send it us on support@backendless.com
Thanks!

Could you also describe what you have deployed in the “libs” and “classes” directories?

Hi Anatolii and Mark,

I managed in some way to fix it.
It seems it was a connection problem due to the internet connection limits introduced by my university.

When I tried to deploy the code from my own internet conenction at home it worked perfectly.

@ Mark

In my libs folder there is only the backendless.jar file, as I red in a previous post that the other jar file had some problems.

Thank you very much for your attention.