https://answers.axonivy.com/questions/3140/migration-from-6-0-to-7-0-linux-server<p>Hello everyone, I am migrating from 6.0 to 7.0 on linux machine. Here are the steps I have done so far:</p> <ul> <li>Create user called "ivy"</li> <li>Download and unzip the engine with the instructions provided in the documentation</li> <li>Set the autoConfig parameter to true with username and password to the db in serverconfig.xml</li> <li>Start the engine</li> </ul> <p>While starting the engine I didnt get any error, but once i open the browser i have noticed two things:</p> <ul> <li>when i open the browser i can see the old applications and processes on the screen</li> <li> <p>when I click on Admin a progress bar is appearing which is refreshing all the time without any succeed and in the logs i have this error:</p> <p>11:57:11.983 ERROR [....error.restricted] Error Dumper 'Eclipse' has thrown an unexpected exception java.lang.NullPointerException at ch.ivyteam.ivy.error.restricted.EclipseDumper.dump(EclipseDumper.java:39) at ch.ivyteam.ivy.error.restricted.ErrorReport.createErrorReport(ErrorReport.java:160) at ch.ivyteam.ivy.error.restricted.ErrorReport.createErrorReport(ErrorReport.java:128) at ch.ivyteam.ivy.application.restricted.EndUserErrorDetails.createEndUserErrorReport_aroundBody8(EndUserErrorDetails.java:115)</p> </li> </ul> <p>EDIT I see also this error message at the top of the log: <em>The process model version '1' of process model 'Administration' of web application 'System' is currently unavailabl e because of maintenance.</em></p>enFri, 23 Mar 2018 05:16:03 -0400https://answers.axonivy.com/questions/3140/migration-from-6-0-to-7-0-linux-server#3150<p>Yes even after restart the error occurs again, no there is nothing suspicious than this</p>imotebFri, 23 Mar 2018 05:16:03 -0400https://answers.axonivy.com/questions/3140/migration-from-6-0-to-7-0-linux-server#3150https://answers.axonivy.com/questions/3140/migration-from-6-0-to-7-0-linux-server#3148<p>And the error stays when you restart again? Do you see other suspicious entries in the log?</p>Reguel WermelingerFri, 23 Mar 2018 04:50:39 -0400https://answers.axonivy.com/questions/3140/migration-from-6-0-to-7-0-linux-server#3148