java.lang.NullPointerException: This exception has no message.

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java.lang.NullPointerException:
at liquibase.executor.jvm.JdbcExecutor$QueryCallableStatementCallback.doInCallableStatement(JdbcExecutor.java:383)
at liquibase.executor.jvm.JdbcExecutor.execute(JdbcExecutor.java:96)
at liquibase.executor.jvm.JdbcExecutor.query(JdbcExecutor.java:132)
at liquibase.executor.jvm.JdbcExecutor.query(JdbcExecutor.java:143)
at liquibase.executor.jvm.JdbcExecutor.queryForObject(JdbcExecutor.java:151)
at liquibase.executor.jvm.JdbcExecutor.queryForObject(JdbcExecutor.java:166)
at liquibase.executor.jvm.JdbcExecutor.queryForObject(JdbcExecutor.java:161)
at liquibase.database.AbstractJdbcDatabase.getConnectionSchemaName(AbstractJdbcDatabase.java:318)
at liquibase.database.AbstractJdbcDatabase.getDefaultSchemaName(AbstractJdbcDatabase.java:301)
at liquibase.CatalogAndSchema.customize(CatalogAndSchema.java:132)
at liquibase.snapshot.SnapshotGeneratorFactory.createSnapshot(SnapshotGeneratorFactory.java:116)
at liquibase.command.DiffCommand.createReferenceSnapshot(DiffCommand.java:190)
at liquibase.command.DiffCommand.createDiffResult(DiffCommand.java:140)
at liquibase.command.DiffToChangeLogCommand.run(DiffToChangeLogCommand.java:51)
at liquibase.command.AbstractCommand.execute(AbstractCommand.java:8)
at liquibase.integration.commandline.CommandLineUtils.doDiffToChangeLog(CommandLineUtils.java:121)
at liquibase.integration.commandline.Main.doMigration(Main.java:936)
at liquibase.integration.commandline.Main.run(Main.java:175)

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