Error while applying rule ProjectScanRule: interpreter

// FrameworksTest.java
 @Test public void testMinMax() throws Exception {
 Table table = new TableImpl();
 final SchemaPlus rootSchema = Frameworks.createRootSchema(true);
 SchemaPlus schema = rootSchema.add("x", new AbstractSchema());
 schema.add("MYTABLE", table);
 List<RelTraitDef> traitDefs = new ArrayList<>();
 traitDefs.add(ConventionTraitDef.INSTANCE);
 traitDefs.add(RelDistributionTraitDef.INSTANCE);
 SqlParser.Config parserConfig =
 SqlParser.configBuilder(SqlParser.Config.DEFAULT)
 .setCaseSensitive(false)
 .build();
final FrameworkConfig config = Frameworks.newConfigBuilder()
 .parserConfig(parserConfig)
 .defaultSchema(schema)
 .traitDefs(traitDefs)
 // define the rules you want to apply
 .ruleSets(
 RuleSets.ofList(AbstractConverter.ExpandConversionRule.INSTANCE, ProjectTableScanRule.INSTANCE))
 .programs(Programs.ofRules(Programs.RULE_SET))
 .build();
executeQuery(config, " select min(id) as mi, max(id) as ma from mytable where id=1 group by id",
 CalciteSystemProperty.DEBUG.value());
 }