There is no listen step error in the vse.log when receiving an invalid base path with a space like 'POST \u200B/inf/...'
There is an entry in vse_matches.log:
2022-03-23 06:31:58,561Z (16:31)[PortServer:0.0.0.0/0.0.0.0:8888] INFO - Response on the Wire HTTP/1.1 404 Not Found
Connection: close
Content-Type: text/html; charset=US-ASCII
Content-Length: 139
<html><head><title>404 Not Found</title></head><body><h1>Not Found</h1>The requested URL was not found on this server.<p><hr></body></html>
But no error in the vse.log in DEBUG.
Release : 10.6, 10.7
Component : DevTest Virtual Service
A patch is available for DevTest 10.6 and 10.7.2 by opening a support case with Broadcom support.