I have xsd files with schema tag and xs:schema tag and it doesn't allow conversion to json

C:\Users\Sahil>java -jar C:/Users/Sahil/Downloads/jsonix-schema-compiler-full-2.3.9.jar -generateJsonSchema -p sample C:\temp\Tibtrak\src\RuleService_Lease\RulesService_Lease\Schemas\ae2.xsd
[ERROR] schema_reference.4: Failed to read schema document 'file:/C:/temp/Tibtrak/src/RuleService_Lease/RulesService_Lease/Schemas/ae2.xsd', because 1) could not find the document; 2) the document could not be read; 3) the root element of the document is not .
unknown location

[ERROR] org.hisrc.jsonix.execution.JsonixInvoker - The model is null, there was probably a problem parsing schemas.