500 Error creating package

Hey there, I've got some established code that is able to create packages consistently. However, I've run across a particular set of documents / metadata that is preventing the server from creating. This is the error from SDK: The remote server returned an error: (500) Internal Server Error. HTTP POST on URI https://xxxx.xxx.comt/api/packages. Optional details: {"code":500,"technical":"could not prepare statement","messageKey":"error.internal.default","message":"Unexpected error. Any idea what might generate that message? If not, what's the best way to troubleshoot? We are installed on-prem. Thanks! - Aaron