Cannot process an HTTP request to servlet [Faces Servlet] in [wcb] web application

Question

Hi All
l am working on a Wcem 3.0 with Trex with ERP and WAS 7.3.
When I logon to http://<host>:<port>/wcb/index.html url I am able to see wcbuilder_erp & wcbuilder_erp_ume application ids.
But suddenly I am getting The website cannot display the page error message when I access the above mentioned URL.
When I verify the developer log trace it showing as 500 Internal sever error issue.[EXCEPTION] java.lang.VerifyError: Bad return type
In defaultTrace.trc file it is showing as Cannot process an HTTP request to servlet [Faces Servlet] in [wcb] web application exception.
09 10 18:08:56:098#+0530#Error#com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl#
com.sap.ASJ.web.000137#WEC-APP-BF#sap.com/wec~comm~wcb~leanapp#C0000A229CA7094A0000000000001188#2392750000000004#sap.com/wec~comm~wcb~leanapp#com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl#Guest#0##CFAFBF4C38E411E4B4750000002482AE#ffbcbcdd38e611e49d020000002482ae#ffbcbcdd38e611e49d020000002482ae#0#Thread[HTTP Worker [@455349581],5,Dedicated_Application_Thread]#Plain##
Cannot process an HTTP request to servlet [Faces Servlet] in [wcb] web application.
[EXCEPTION] java.lang.VerifyError: Bad return type
Exception Details:
Location: com/sap/wec/tc/core/runtime/jsf/resource/WecExternalContextFactory.getExternalContext(Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;)Ljavax/faces/context/ExternalContext; @17: areturn
Reason: Type 'com/sap/wec/tc/core/runtime/jsf/resource/WecExternalContext' (current frame, stack[0]) is not assignable to 'javax/faces/context/ExternalContext' (from method signature)
Current Frame:
    locals: { 'com/sap/wec/tc/core/runtime/jsf/resource/WecExternalContextFactory', 'java/lang/Object', 'java/lang/Object', 'java/lang/Object' }
    stack: { 'com/sap/wec/tc/core/runtime/jsf/resource/WecExternalContext' }
  Bytecode:
    0000000: bb00 0359 2ab6 0004 2b2c 2db6 0005 b700
    0000010: 06b0                                
    at java.lang.Class.getDeclaredConstructors0(Native Method)
    at java.lang.Class.privateGetDeclaredConstructors(Class.java:2446)
    at java.lang.Class.getConstructor0(Class.java:2756)
    at java.lang.Class.getConstructor(Class.java:1693)
Any help?
Regards
Rami Reddy

Answer 1

Hi Steffen,
Thanks for promt response.
But when I checked with Basis team as of now there are not yet configured TREX, only WCEM components has been configured in WAS 7.3. When they are configuring WCEM components HTTPS protocol not configured.
But for past 2 weeks I am able to see the below screen using http://<host>:<port>/wcb/index.html url.
But now I am getting The website cannot display the page error.
Please clarify me if anything is wrong from my side. And also pl let us know which configurations I have to check for fixing the issue.
Regards,
Rami Reddy