issue when upgraded confluence from 4.0.3 to 5.10.0

[Zoran Nedeljkovic]

2019-09-11 10:31:33,697 ERROR [http-nio-8090-exec-8] [common.error.jersey.ThrowableExceptionMapper] toResponse Uncaught exception thrown by REST service: The body of this ContentEntityObject ('') was 'BodyType:XHTML' but was expected to be 'BodyType:WIKI'
-- referer: http://localhost:8090/spacedirectory/view.action | url: /rest/spacedirectory/1/search | traceId: 398aa77002e73fb7 | userName: admin
java.lang.UnsupportedOperationException: The body of this ContentEntityObject ('') was 'BodyType:XHTML' but was expected to be 'BodyType:WIKI'
at com.atlassian.confluence.core.ContentEntityObject.getBodyContent(ContentEntityObject.java:272) 

[Shannon S]

Hello @Zoran Nedeljkovic, 

It's nice to meet you! Welcome to Atlassian Community.

Could you let me know the exact method you used when upgrading? Please let me know each of the steps, and I can help you out with your issue. It'll also help to know your database version, server version, and JAVA version.

Please note that once we solve this upgrade, you'll want to move from 5.10 up to the latest version of Confluence per the announced security vulnerabilities this past spring. We'll handle this issue first, but then I can help to get you on the latest.

Regards,

Shannon