Better error message (on yaml parse error?) / java.lang.NullPointerException

while running an update, i received the following error, which i suspect should be caught, then rethrown as something more helpful:

broken yaml to trigger this (accidently added 'loadUpdateData' instead of replacing 'loadData'):

• changeSet:
  id: LoadSeed-FlagState
  author: me
  changes:

• loadUpdateData:

• loadData:
  tableName: ...
  primaryKey: Name

environment is the docker container rubms/liquibase-mssql:6.2.2
(customer-db-release_1 is messages from the docker component that was running liquibase)

customer-db-release_1 | Unexpected error running Liquibase: Unknown Reason
customer-db-release_1 |
customer-db-release_1 | SEVERE 7/27/18 3:08 AM: liquibase: seeds/ref/changelog.yaml::LoadSeed-FlagState::Andrew Hill: Unknown Reason
customer-db-release_1 | java.lang.NullPointerException
customer-db-release_1 | at java.io.File.<init>(File.java:277)
customer-db-release_1 | at liquibase.resource.FileSystemResourceAccessor.getResourcesAsStream(FileSystemResourceAccessor.java:68)
customer-db-release_1 | at liquibase.resource.CompositeResourceAccessor.getResourcesAsStream(CompositeResourceAccessor.java:28)
customer-db-release_1 | at liquibase.util.StreamUtil.singleInputStream(StreamUtil.java:186)
customer-db-release_1 | at liquibase.util.StreamUtil.openFromClasspath(StreamUtil.java:240)
customer-db-release_1 | at liquibase.util.StreamUtil.openStream(StreamUtil.java:151)
customer-db-release_1 | at liquibase.change.core.LoadDataChange.generateCheckSum(LoadDataChange.java:467)
customer-db-release_1 | at liquibase.changelog.ChangeSet.generateCheckSum(ChangeSet.java:251)
customer-db-release_1 | at liquibase.changelog.ChangeSet.toString(ChangeSet.java:770)
customer-db-release_1 | at liquibase.changelog.ChangeLogIterator.createKey(ChangeLogIterator.java:107)
customer-db-release_1 | at liquibase.changelog.ChangeLogIterator.alreadySaw(ChangeLogIterator.java:115)
customer-db-release_1 | at liquibase.changelog.ChangeLogIterator.run(ChangeLogIterator.java:78)
customer-db-release_1 | at liquibase.changelog.DatabaseChangeLog.validate(DatabaseChangeLog.java:259)
customer-db-release_1 | at liquibase.Liquibase.update(Liquibase.java:210)
customer-db-release_1 | at liquibase.Liquibase.update(Liquibase.java:192)
customer-db-release_1 | at liquibase.integration.commandline.Main.doMigration(Main.java:1130)
customer-db-release_1 | at liquibase.integration.commandline.Main.run(Main.java:188)
customer-db-release_1 | at liquibase.integration.commandline.Main.main(Main.java:103)