You get this error due to various reasons:
- There is an error deploying content model. There could be various reasons for deployment failure, such as you added a typo, used duplicate property/type/aspect name, used an invalid data type, used an unknown unsupported element in the model etc. In this case content model could not be compiled, and generally you get clear error as to why it failed.
- There are breaking changes in content model.
- Connection error, solr is not able to connect to repo.
In your case, you are getting this error due to model compilation failure which prevented your custom model deployment. If you read the stacktrace, the error is clear:
Caused by: org.alfresco.service.cmr.dictionary.DictionaryException: 06117357 d_dictionary.class_definition.mandatory_aspect_not_found - [ecmcnddoc:has_document_case, ecmcndindustrystd:nd_industry_standards]
A mandatory aspect is expected which can not be found in your model. Correct the error and retry.
(ACSCE, AWS SAA, Azure Admin)