Local Author AEM Instance - Error in Starting

[Rohan_Garg]

Hi All,

I had left my AEM instance up and running over the night but found the instance not working with the below error - 

22.07.2022 10:07:05.930 *ERROR* [[0:0:0:0:0:0:0:1] [1658464625922] GET /libs/granite/core/content/login.html HTTP/1.1] org.apache.sling.engine.impl.SlingRequestProcessorImpl service: Uncaught Throwable
javax.servlet.ServletException: Failed executing script /libs/granite/core/components/login/login.jsp: Unable to setup processor: Unable to get component of class 'interface org.apache.sling.rewriter.Transformer' with type 'linkchecker'.
at org.apache.sling.servlets.resolver.internal.bundle.BundledScriptServlet.service(BundledScriptServlet.java:82) [org.apache.sling.servlets.resolver:2.9.4]

22.07.2022 10:07:05.933 *ERROR* [[0:0:0:0:0:0:0:1] [1658464625922] GET /libs/granite/core/content/login.html HTTP/1.1] org.apache.sling.servlets.resolver.internal.SlingServletResolver Calling the error handler resulted in an error
org.apache.sling.api.scripting.ScriptEvaluationException:
at org.apache.sling.scripting.core.impl.DefaultSlingScript.call(DefaultSlingScript.java:423) [org.apache.sling.scripting.core:2.4.6]
at org.apache.sling.scripting.core.impl.DefaultSlingScript.eval(DefaultSlingScript.java:191) [org.apache.sling.scripting.core:2.4.6]

22.07.2022 10:07:05.935 *ERROR* [[0:0:0:0:0:0:0:1] [1658464625922] GET /libs/granite/core/content/login.html HTTP/1.1] org.apache.sling.engine.impl.DefaultErrorHandler Error handler failed:java.io.IOException
java.io.IOException: Error handler failed: org.apache.sling.api.scripting.ScriptEvaluationException
at org.apache.sling.servlets.resolver.internal.SlingServletResolver.handleError(SlingServletResolver.java:657) [org.apache.sling.servlets.resolver:2.9.4]
at org.apache.sling.servlets.resolver.internal.SlingServletResolver.handleError(SlingServletResolver.java:375) [org.apache.sling.servlets.resolver:2.9.4]
at org.apache.sling.engine.impl.DefaultErrorHandler.handleError(DefaultErrorHandler.java:135) [org.apa

22.07.2022 10:08:31.954 *ERROR* [[0:0:0:0:0:0:0:1] [1658464711943] GET /libs/granite/core/content/login.html HTTP/1.1] org.apache.sling.engine.impl.SlingMainServlet service: Uncaught Problem handling the request
org.apache.sling.api.SlingException: Unable to setup processor: Unable to get component of class 'interface org.apache.sling.rewriter.Transformer' with type 'linkchecker'.
at org.apache.sling.rewriter.impl.ProcessorManagerImpl.getProcessor(ProcessorManagerImpl.java:479) [org.apache.sling.rewriter:1.3.2]
at org.apache.sling.rewriter.impl.RewriterResponse.getProcessor(RewriterResponse.java:172) [org.apache.sling.rewriter:1.3.2]
at org.apache.sling.rewriter.impl.RewriterResponse.getWriter(RewriterResponse.java:110) [org.apache.sling.rewriter:1.3.2]
at org.apache.sling.engine.impl.DefaultErrorHandler.sendError(DefaultErrorHandler.java:175) [org.apache.sling.engine:2.9.0]

Could you please help in identifying the root cause of the issue ?

Update - 24/July/2022

I had set up another instance on another port to work for the day. But when I turned off the instance and brought it up again I got the same errors - 

24.07.2022 11:32:47.249 *ERROR* [127.0.0.1 [1658642567233] GET /libs/granite/core/content/login.html HTTP/1.1] org.apache.sling.servlets.resolver.internal.SlingServletResolver Original error class javax.servlet.ServletException
javax.servlet.ServletException: Failed executing script /libs/granite/core/components/login/login.jsp: Unable to setup processor: Unable to get component of class 'interface org.apache.sling.rewriter.Transformer' with type 'linkchecker'.
at org.apache.sling.servlets.resolver.internal.bundle.BundledScriptServlet.service(BundledScriptServlet.java:82) [org.apache.sling.servlets.resolver:2.9.4]

24.07.2022 11:32:47.250 *ERROR* [127.0.0.1 [1658642567233] GET /libs/granite/core/content/login.html HTTP/1.1] org.apache.sling.engine.impl.DefaultErrorHandler Error handler failed:java.io.IOException
java.io.IOException: Error handler failed: javax.servlet.ServletException

24.07.2022 11:32:47.250 *ERROR* [127.0.0.1 [1658642567233] GET /libs/granite/core/content/login.html HTTP/1.1] org.apache.sling.engine.impl.SlingMainServlet service: Uncaught Problem handling the request
org.apache.sling.api.SlingException: Unable to setup processor: Unable to get component of class 'interface org.apache.sling.rewriter.Transformer' with type 'linkchecker'.

24.07.2022 11:34:59.073 *WARN* [127.0.0.1 [1658642699069] GET /libs/granite/core/content/login.html HTTP/1.1] libs.granite.core.components.login.login__002e__jsp j_reason param value 'unknown' cannot be mapped to a valid reason message: ignoring

24.07.2022 11:34:59.076 *WARN* [127.0.0.1 [1658642699069] GET /libs/granite/core/content/login.html HTTP/1.1] com.adobe.granite.metrics.knownerrors.impl.ErrorLoggingComponentFilter Exception in component: category=CUSTOMER_CODE, resourceType=granite/core/components/login, exceptionType=javax.servlet.ServletException, errorId=CUSTOMER, resource=/libs/granite/core/content/login, exceptionMessage = Failed executing script /libs/granite/core/components/login/login.jsp: Unable to setup processor: Unable to get component of class 'interface org.apache.sling.rewriter.Transformer' with type 'linkchecker'.

24.07.2022 11:34:59.077 *ERROR* [127.0.0.1 [1658642699069] GET /libs/granite/core/content/login.html HTTP/1.1] org.apache.sling.engine.impl.SlingRequestProcessorImpl service: Uncaught Throwable
javax.servlet.ServletException: Failed executing script /libs/granite/core/components/login/login.jsp: Unable to setup processor: Unable to get component of class 'interface org.apache.sling.rewriter.Transformer' with type 'linkchecker'.

@B_Sravan - Any suggestions on this ?

[Sachin_Arora_]

Did you try restarting the server? Please try it might help.

Also please check if all bundles are in Active state.

[Rohan_Garg]

Hi Sachin, Thanks for replying

The /system/console/bundles won't open up either for some reason.

Not sure what is the issue. For now I have migrated to another instance on a different port.

[B_Sravan]

Usually the session ends when the instance is inactive for a certain period of time.
Please restart your instance, it should work.

If you wish not to restart, please go to localhost:4502/system/console/bundles and if login page is prompted please login using your credentials and check if all the bundles are in active state.

Thanks,

Sravan

[Rohan_Garg]

Hi Sravan,

Thanks for the response. I tried instance restart as well back then but didn't work.

Have migrated to another instance for now but will try to bring up the server again and let you know.

[B_Sravan]

Hi @Rohan_Garg ,

may I know which version of AEM and Java are you using? 

[Rohan_Garg]

@B_Sravan - I am using Java version 11 and AEM Version 6.5 (aem-sdk-2022.4.7138.20220427T075748Z-220401)

[Jörg_Hoh · Accepted solution]

the filename indicates that you are NOT using AEM 6.5, but rather the SDK version of AEM as a Cloud Service. Java 11 is supported and should work.

Restarting should fix the problem for the moment, I am aware that a fix in this direction should be included soon-ish into the SDK.

[B_Sravan]

Then there shouldn't be any problem. Restarting should fix the issue.

1. Go to your AEM installed folder, and delete the CRX-quickstart folder (make sure to take back up your work through packages)
2. Open command prompt/ Terminal on the same folder where you have your jar file and

3. Type the command "Java -jar AEM-author-p4502" and wait for the instance to start up.
(assuming the jar file is renamed as mentioned in the above command).

Thanks,

Sravan

[Rohan_Garg]

Thanks for the response. Yes, I have been setting up the instance again after backing up content packages.