Improve error message when the client cannot be created. #46

Job	Run time
CI Sanity Check	31s
Attach pull request number	0s
Initial JDK 17 Build	13m 35s
Calculate Test Jobs	23s
JVM Tests - JDK 17	18m 31s
JVM Tests - JDK 21	17m 39s
JVM Tests - JDK 17 Windows	17m 1s
Gradle Tests - JDK ${{ matrix.java.name }}	0s
Maven Tests - JDK ${{ matrix.java.name }}	0s
Devtools Tests - JDK ${{ matrix.java.name }}	0s
Quickstarts Compilation - JDK 17	5m 44s
MicroProfile TCKs Tests	6m 29s
Kubernetes Tests - JDK ${{ matrix.java.name }}	0s
Native Tests - Data4	4m 48s
Native Tests - Virtual Thread - Main	3m 16s
Native Tests - Security2	4m 32s
Native Tests - Virtual Thread - Messaging	9m 57s
Native Tests - Security3	5m 21s
Native Tests - Cache	9m 10s
Native Tests - HTTP	12m 34s
Native Tests - Misc1	4m 11s
Native Tests - Misc4	5m 21s
Build report	13s
	2h 19m 16s

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