Katalon Studio 6.0.4 inserts ? at the end of POST rest url automatically

Create Post Rest request object in Object repository
Provide the POST url and hit on run icon

Actual Observation
? is inserted by Katalon at the end of the URL.
Because of this i get Bad request error message

Please find the screen shorts below

@Mangala.Koladur, this is a bug of Katalon Studio and we will fix it in next release. Sorry for any inconvenience this may cause to you.

The issue is fixed in 6.0.6 beta release. Please download the package at Beta release 6.0.6 then run web service request again. Let us know if you still trouble any other issue and provide us your error log as well

It works fine now. Thank you for the quick response and support