Industrial fault description:

The file-uploading process fails.
The "max-content-length" configuration of spray is only 2 Mb, not allowing to support to upload a big file.


TrainTicket replicated fault description:

Our system has the ability to add routes in batches. You can upload the file to add routes in batches.
But the size of the permitted file is too small, sometimes your file will be rejected because of the size.