I am currently running an upgrade from openmrs standalone version 1.8.3 to a higher version. I have downloaded the latest version 2.7.0 which happens to be version 2.1.2
I copied the newly downloaded .WAR file into the /home/user/openmrs/tomcat/webapps directory and deleted the already existing openmrs-standalone .WAR file and openmrs-standalone folder in that directory then pasted the new .WAR file and rename it to (openmrs-standalone.war)
It finally executes and unzipped the .WAR file then lunches the browser and displays that error shown.
This approach was recommended by a core openmrs developer.
I have provided the full stack trace >>> CLICK HERE
I need URGENT assistance in resolving this upgrade errors.
Thank you G.Gomez