ModelQuery.latestVersion() no found any record

[longsebo]

Describe the bug
I use flowable 7.0 engine create a model success!
then use ModelQuery modelQuery = repositoryService.createModelQuery().latestVersion().orderByCreateTime().desc();
not found any record!
But use repositoryService.createModelQuery() found a record is correct！Why？
Expected behavior
ModelQuery modelQuery = repositoryService.createModelQuery().latestVersion().orderByCreateTime().desc();
modelQuery.count(); return a Numbers greater than 0

Code
ModelQuery modelQuery = repositoryService.createModelQuery().latestVersion().orderByCreateTime().desc();
// EXECUTE query
long pageTotal = modelQuery.count();
if (pageTotal <= 0) {
System.out.println('pageTotal:'+String.valueOf(pageTotal));
}
This result print pageTotal:0
Additional context
I are using Flowable within Spring Boot ,It's version is 7.0

[filiphr]

How are you creating the models? Why are you using the ModelQuery?