Media sync not working on Docker local environment

This plugin works great for us on staging and production environments, but does not sync media on our local environments. We use Docker containers for our local environments. When beginning the media sync in the local database (local environment has it’s own unique database), it will get to 50 items queued quickly, but never processes any files. In the network tab in Chrome, we see requests:

name – d3BDbG91ZFxTdGF0ZWxlc3NNZWRpYVxTeW5jXEltYWdlU3luYw
status – 200
type – xhr
initiator – angular.min.js
size – 1.1 or 1.2kb

Which is the same pattern we see on staging and production instances wherein the media sync is working (the only difference size is usually under a kb on staging and production). BUT, on our local environment the requests just keep coming seemingly indefinitely, status of 200 with each, but no files are ever synced. It just stays at 50 items queued, 0 processed. Has anyone else had this issue or does anyone have any ideas of why this might be happening and how to resolve it?

Thank you!