Support Article
Unable to Build Model - Class <blank> does not exist
SA-101106
Summary
Error occurs when using the Web Chatbot interface to perform the Build Model action from the Preview Console.
Error Messages
Errors:
1. Model CCC ChatBOT: NLPRuleSaveAsFailedSave failed - Class <blank> does not exist
Trying to save an invalid page: page is not valid
[cutor-thread-1618242] [TABTHREAD0] [ ] [ Ellambryo:01.01.01] (sion_DecisionParameters.Action) ERROR <your_server>|127.0.0.1 RF24 - Error in Obj-Open-By-Handle
com.pega.pegarules.pub.database.BadClassDefinitionException: Class <blank> does not exist
at com.pega.platform.datastoreexecutor.opener.internal.OpenerImpl.validateOpen(OpenerImpl.java:200) ~[datastoreexecutor.jar:?]
at com.pega.platform.datastoreexecutor.opener.internal.OpenerImpl.open(OpenerImpl.java:52) ~[datastoreexecutor.jar:?]
at com.pega.pegarules.data.internal.access.DatabaseImpl.open(DatabaseImpl.java:2642) ~[prprivate.jar:?]
at com.pega.pegarules.pub.runtime.AbstractActivity.objOpenByHandle(AbstractActivity.java:136) ~[prpublic.jar:?]
at com.pegarules.generated.activity.ra_action_pxsaveasreferencednlpbinaryfiles_7aa22b0dab3b5a3f788d86e9725206cb.step1_2_circ
Steps to Reproduce
- Open the Web Chatbot.
- Define a topic with Show analysis.
- Build a Model.
Root Cause
A defect in Pegasystems’ code or rules.
Resolution
Perform the following local-change:
Update the model from the Pega Prediction Studio after providing feedback from the Training Data tab, and adding it to the model.
This feature is implemented in the following:
- Pega Platform 8.2.6
- Pega Platform 8.3.2
- Pega Platform 8.4
Published July 28, 2020 - Updated December 2, 2021
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