LIQUIBASE: [Amazon](500310) Invalid operation: terminating connection due to administrator command

I’m trying to do a liquibase generateChangeLog on 48 schemas in an Amazon Redshift database and I’m getting the following error:

[Amazon](500310) Invalid operation: terminating connection due to administrator command

When I do a smaller number of schemas, I don’t get the error. I’ve tried adding &pooling=false to my JDBC url, but that hasn’t helped. Thanks in advance for your help!!