title: ERROR] Failed to execute goal org.apache.maven.plugins:maven-release-plugin:2.4.2:prepare Unable to check for local modifications
body: <p>**</p>
  
  <pre><code>ERROR] Failed to execute goal org.apache.maven.plugins:maven-release-plugin:2.4.2:prepare (default-cli) on project artifactorydemo: Unable to check for local modifications
  ERROR] Provider message:
  ERROR] The svn command failed.
  ERROR] Command output:
  ERROR] svn: E155036: Please see the 'svn upgrade' command
  ERROR] svn: E155036: The working copy at 'E:\STS\New folder\artifactorydemo'
  ERROR] is too old (format 29) to work with client version '1.9.1 (r1698128)' (expects format 31). You need to upgrade the working copy first.
  ERROR] -&gt; [Help 1]
  ERROR]
  </code></pre>
  
  <p>**</p>
  
  <p>Please suggest some thing am not figure outing thid where am doing the wrong 
  Thanks in advance </p>