Class '' was not found.
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Class '' was not found.


Article ID: 253423


Updated On:


CA Automic Workload Automation - Automation Engine CA Automic One Automation


When starting AWI v12.3.9, the following Error is raised:

Class '' was not found.

Additional content:

Vaadin is running in DEBUG MODE.
Add productionMode=true to web.xml to disable debug features.
To show debug window, add ?debug to your application URL.
java.lang.NoClassDefFoundError: com/vaadin/pro/licensechecker/LicenseChecker
        at com.vaadin.server.VaadinServletService.verifyLicense(
        at com.vaadin.server.VaadinServletService.<init>(
        at com.uc4.ecc.framework.entrypoint.servlet.ECCServletService.<init>(
        at com.uc4.ecc.framework.entrypoint.servlet.main.MainApplicationServlet.createServletService(
        at com.vaadin.server.VaadinServlet.init(
        at com.uc4.ecc.framework.entrypoint.servlet.main.MainApplicationServlet.init(
        at org.apache.felix.http.base.internal.handler.ServletHandler.init(
Caused by: java.lang.ClassNotFoundException: *** Class '' was not found. Bundle com.vaadin.server [31] does not import package '', nor is the package exported by any other bundle or available from the system class loader. ***
        at org.apache.felix.framework.BundleWiringImpl$BundleClassLoader.loadClass(
        at java.base/java.lang.ClassLoader.loadClass(Unknown Source)
        ... 75 common frames omitted
Caused by: java.lang.ClassNotFoundException: not found by com.vaadin.server [31]
        at org.apache.felix.framework.BundleWiringImpl.findClassOrResourceByDelegation(
        at org.apache.felix.framework.BundleWiringImpl.access$200(
        at org.apache.felix.framework.BundleWiringImpl$BundleClassLoader.loadClass(
        ... 76 common frames omitted


AWI never gets operational, calls to AWI receive an HTTP 404 response systematically.



Apache Tomcat 9.0.65

OpenJDK Runtime Environment (build 11.0.16+8-LTS)

Automic Web Interface 12.3.9.GA01-12.3.9-GA01


This is a defect. The application is not able to handle the flag debug=true in properties file correctly .



This was fixed with 21.0.0 and 12.3.9 HF1



The Workaround consists in removing  the line "debug=true" from the of your AWI application.