ERROR 2022-03-24 14:17:59,225 [Stardog.Executor-189] com.complexible.stardog.serf.mysql.SerfServer:handleClient(288): BI/SQL server frontend error
java.lang.NullPointerException: utf8mb4
	at java.util.Objects.requireNonNull(Objects.java:228) ~[?:1.8.0_312]
	at org.apache.calcite.sql.SqlBasicTypeNameSpec.deriveType(SqlBasicTypeNameSpec.java:222) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.SqlDataTypeSpec.deriveType(SqlDataTypeSpec.java:222) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.SqlDataTypeSpec.deriveType(SqlDataTypeSpec.java:209) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.validate.SqlValidatorImpl$DeriveTypeVisitor.visit(SqlValidatorImpl.java:5868) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.validate.SqlValidatorImpl$DeriveTypeVisitor.visit(SqlValidatorImpl.java:5753) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.SqlDataTypeSpec.accept(SqlDataTypeSpec.java:186) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.validate.SqlValidatorImpl.deriveTypeImpl(SqlValidatorImpl.java:1753) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.validate.SqlValidatorImpl.deriveType(SqlValidatorImpl.java:1738) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.SqlOperator.constructArgTypeList(SqlOperator.java:605) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.SqlFunction.deriveType(SqlFunction.java:237) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.SqlFunction.deriveType(SqlFunction.java:219) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.validate.SqlValidatorImpl$DeriveTypeVisitor.visit(SqlValidatorImpl.java:5766) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.validate.SqlValidatorImpl$DeriveTypeVisitor.visit(SqlValidatorImpl.java:5753) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.SqlCall.accept(SqlCall.java:139) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.validate.SqlValidatorImpl.deriveTypeImpl(SqlValidatorImpl.java:1753) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.validate.SqlValidatorImpl.deriveType(SqlValidatorImpl.java:1738) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.SqlAsOperator.deriveType(SqlAsOperator.java:133) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.validate.SqlValidatorImpl$DeriveTypeVisitor.visit(SqlValidatorImpl.java:5766) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.validate.SqlValidatorImpl$DeriveTypeVisitor.visit(SqlValidatorImpl.java:5753) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.SqlCall.accept(SqlCall.java:139) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.validate.SqlValidatorImpl.deriveTypeImpl(SqlValidatorImpl.java:1753) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.validate.SqlValidatorImpl.deriveType(SqlValidatorImpl.java:1738) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.validate.SqlValidatorImpl.expandSelectItem(SqlValidatorImpl.java:437) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.validate.SqlValidatorImpl.validateSelectList(SqlValidatorImpl.java:4165) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.validate.SqlValidatorImpl.validateSelect(SqlValidatorImpl.java:3434) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.validate.SelectNamespace.validateImpl(SelectNamespace.java:60) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.validate.AbstractNamespace.validate(AbstractNamespace.java:84) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.validate.SqlValidatorImpl.validateNamespace(SqlValidatorImpl.java:1064) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.validate.SqlValidatorImpl.validateQuery(SqlValidatorImpl.java:1038) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.SqlSelect.validate(SqlSelect.java:232) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.validate.SqlValidatorImpl.validateScopedExpression(SqlValidatorImpl.java:1013) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.validate.SqlValidatorImpl.validate(SqlValidatorImpl.java:721) ~[calcite-core-1.25.0.jar:1.25.0]
	at com.complexible.stardog.serf.sql.exec.ParsedQuery.parse(ParsedQuery.java:128) ~[stardog-serf-core-7.9.0.jar:?]
	at com.complexible.stardog.serf.sql.exec.SqlExecutor.execute(SqlExecutor.java:190) ~[stardog-serf-core-7.9.0.jar:?]
	at com.complexible.stardog.serf.mysql.CommandHandler.runQuery(CommandHandler.java:143) ~[stardog-serf-core-7.9.0.jar:?]
	at com.complexible.stardog.serf.mysql.CommandHandler.handleQuery(CommandHandler.java:135) ~[stardog-serf-core-7.9.0.jar:?]
	at com.complexible.stardog.serf.mysql.CommandHandler.performUntilChangeUserOrQuit(CommandHandler.java:66) ~[stardog-serf-core-7.9.0.jar:?]
	at com.complexible.stardog.serf.mysql.SerfServer.handleClient(SerfServer.java:262) ~[stardog-serf-core-7.9.0.jar:?]
	at com.complexible.stardog.serf.mysql.SerfServer.lambda$run$2(SerfServer.java:147) ~[stardog-serf-core-7.9.0.jar:?]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_312]
	at com.google.common.util.concurrent.TrustedListenableFutureTask$TrustedFutureInterruptibleTask.runInterruptibly(TrustedListenableFutureTask.java:125) [guava-30.1.1-jre.jar:?]
	at com.google.common.util.concurrent.InterruptibleTask.run(InterruptibleTask.java:69) [guava-30.1.1-jre.jar:?]
	at com.google.common.util.concurrent.TrustedListenableFutureTask.run(TrustedListenableFutureTask.java:78) [guava-30.1.1-jre.jar:?]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_312]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_312]
	at java.lang.Thread.run(Thread.java:748) [?:1.8.0_312]
ERROR 2022-03-24 14:18:00,664 [Stardog.Executor-189] com.complexible.stardog.serf.mysql.SerfServer:handleClient(288): BI/SQL server frontend error
java.lang.NullPointerException: utf8mb4
	at java.util.Objects.requireNonNull(Objects.java:228) ~[?:1.8.0_312]
	at org.apache.calcite.sql.SqlBasicTypeNameSpec.deriveType(SqlBasicTypeNameSpec.java:222) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.SqlDataTypeSpec.deriveType(SqlDataTypeSpec.java:222) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.SqlDataTypeSpec.deriveType(SqlDataTypeSpec.java:209) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.validate.SqlValidatorImpl$DeriveTypeVisitor.visit(SqlValidatorImpl.java:5868) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.validate.SqlValidatorImpl$DeriveTypeVisitor.visit(SqlValidatorImpl.java:5753) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.SqlDataTypeSpec.accept(SqlDataTypeSpec.java:186) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.validate.SqlValidatorImpl.deriveTypeImpl(SqlValidatorImpl.java:1753) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.validate.SqlValidatorImpl.deriveType(SqlValidatorImpl.java:1738) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.SqlOperator.constructArgTypeList(SqlOperator.java:605) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.SqlFunction.deriveType(SqlFunction.java:237) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.SqlFunction.deriveType(SqlFunction.java:219) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.validate.SqlValidatorImpl$DeriveTypeVisitor.visit(SqlValidatorImpl.java:5766) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.validate.SqlValidatorImpl$DeriveTypeVisitor.visit(SqlValidatorImpl.java:5753) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.SqlCall.accept(SqlCall.java:139) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.validate.SqlValidatorImpl.deriveTypeImpl(SqlValidatorImpl.java:1753) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.validate.SqlValidatorImpl.deriveType(SqlValidatorImpl.java:1738) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.SqlAsOperator.deriveType(SqlAsOperator.java:133) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.validate.SqlValidatorImpl$DeriveTypeVisitor.visit(SqlValidatorImpl.java:5766) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.validate.SqlValidatorImpl$DeriveTypeVisitor.visit(SqlValidatorImpl.java:5753) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.SqlCall.accept(SqlCall.java:139) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.validate.SqlValidatorImpl.deriveTypeImpl(SqlValidatorImpl.java:1753) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.validate.SqlValidatorImpl.deriveType(SqlValidatorImpl.java:1738) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.validate.SqlValidatorImpl.expandSelectItem(SqlValidatorImpl.java:437) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.validate.SqlValidatorImpl.validateSelectList(SqlValidatorImpl.java:4165) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.validate.SqlValidatorImpl.validateSelect(SqlValidatorImpl.java:3434) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.validate.SelectNamespace.validateImpl(SelectNamespace.java:60) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.validate.AbstractNamespace.validate(AbstractNamespace.java:84) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.validate.SqlValidatorImpl.validateNamespace(SqlValidatorImpl.java:1064) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.validate.SqlValidatorImpl.validateQuery(SqlValidatorImpl.java:1038) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.SqlSelect.validate(SqlSelect.java:232) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.validate.SqlValidatorImpl.validateScopedExpression(SqlValidatorImpl.java:1013) ~[calcite-core-1.25.0.jar:1.25.0]
	at org.apache.calcite.sql.validate.SqlValidatorImpl.validate(SqlValidatorImpl.java:721) ~[calcite-core-1.25.0.jar:1.25.0]
	at com.complexible.stardog.serf.sql.exec.ParsedQuery.parse(ParsedQuery.java:128) ~[stardog-serf-core-7.9.0.jar:?]
	at com.complexible.stardog.serf.sql.exec.SqlExecutor.execute(SqlExecutor.java:190) ~[stardog-serf-core-7.9.0.jar:?]
	at com.complexible.stardog.serf.mysql.CommandHandler.runQuery(CommandHandler.java:143) ~[stardog-serf-core-7.9.0.jar:?]
	at com.complexible.stardog.serf.mysql.CommandHandler.handleQuery(CommandHandler.java:135) ~[stardog-serf-core-7.9.0.jar:?]
	at com.complexible.stardog.serf.mysql.CommandHandler.performUntilChangeUserOrQuit(CommandHandler.java:66) ~[stardog-serf-core-7.9.0.jar:?]
	at com.complexible.stardog.serf.mysql.SerfServer.handleClient(SerfServer.java:262) ~[stardog-serf-core-7.9.0.jar:?]
	at com.complexible.stardog.serf.mysql.SerfServer.lambda$run$2(SerfServer.java:147) ~[stardog-serf-core-7.9.0.jar:?]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_312]
	at com.google.common.util.concurrent.TrustedListenableFutureTask$TrustedFutureInterruptibleTask.runInterruptibly(TrustedListenableFutureTask.java:125) [guava-30.1.1-jre.jar:?]
	at com.google.common.util.concurrent.InterruptibleTask.run(InterruptibleTask.java:69) [guava-30.1.1-jre.jar:?]
	at com.google.common.util.concurrent.TrustedListenableFutureTask.run(TrustedListenableFutureTask.java:78) [guava-30.1.1-jre.jar:?]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_312]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_312]
	at java.lang.Thread.run(Thread.java:748) [?:1.8.0_312]