Can't send SOAP request on AWS endpoint

Product Forums Katalon Studio
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I did tests on old environment (endpoint with wsdl) and I need to re-run same tests on new environment on AWS. I have error “Cannot send the test request” - details:
“java.net.UnknownHostException: fl1csqp85d.execute-api.us-east-1.amazonaws.com
at org.apache.http.impl.conn.SystemDefaultDnsResolver.resolve(SystemDefaultDnsResolver.java:45)
at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:111)”
Any ideas?
I’m using this endpoint on SoupUI and it’s working