Invalid /rtac request URL returning 200 instead it should return 400

Overview:
Make an invalid call to edge-rtac with spaces in the request URL. The response should fail with 400 and be handled with a proper error message, instead, it returns 200

Steps to Reproduce:
Request:

curl -i --request GET 'https://edge-pre-honeysuckle-cap1.int.aws.folio.org/rtac?instanceIds%20=%20121063ba-43cc-48f4-a49f-aaf5488127e0&apikey=eyJzIjoiVW80VVRmNGVuYyIsInQiOiJmczA5MDAwMDAwIiwidSI6ImZzMDkwMDAwMDAifQ==&fullPeriodicals=true'

Response:

HTTP/2 200 
date: Thu, 22 Oct 2020 15:34:38 GMT
content-type: application/xml
content-length: 52
server: nginx/1.10.3

<?xml version='1.0' encoding='UTF-8'?>
<instances/>

1. Log into some FOLIO environment as User X
   Use pre-honeysuckle env from PTF. Login as folio user

Expected Results:
Should return 400 Bad Request with proper error message

Actual Results:
Returning 200 with

<?xml version='1.0' encoding='UTF-8'?>
<instances/>

Interested parties:
All consumers of edge-* and mod-rtac