1./test/schemas/oss-fuzz-51295_0.xsd:2: element element: Schemas parser error : element decl. 'e': The element declaration 'e' defines a circular substitution group to element declaration 'e'. 2./test/schemas/oss-fuzz-51295_0.xsd:2: element element: Schemas parser error : element decl. 'e': The element declaration 'e' defines a circular substitution group to element declaration 'e'. 3