# Always get error "java.lang.NullPointerException" when place webservice test object to variable **URL:** \ **Category:** API Testing\ **Tags:** api-testing, katalon-studio\ **Created:** [April 17, 2018, 6:27am UTC](https://forum.katalon.com/t/always-get-error-java-lang-nullpointerexception-when-place-webservice-test-object-to-variable/10301 "2018-04-17T06:27:09Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![Didit\_Setiawan](https://avatars.discourse-cdn.com/v4/letter/d/9de0a6/32.png) [@Didit\_Setiawan](https://forum.katalon.com/u/Didit_Setiawan)\ **Post date:** [April 17, 2018, 6:27am UTC](https://forum.katalon.com/t/always-get-error-java-lang-nullpointerexception-when-place-webservice-test-object-to-variable/10301/1 "2018-04-17T06:27:09Z")
Hello, why i got “java.lang.NullPointerException” when using Katalon v 5.4 but the code is working well on Katalon 5.2, anyone have the solution please asnwer, thank you here is my code RequestObject reqObj = findTestObject(‘API\_request’) after execute that code, script stops with “java.lang.NullPointerException” error ---
**Author:** ![Zarashima](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/zarashima/32/928_2.png) [@Zarashima](https://forum.katalon.com/u/Zarashima)\ **Post date:** [April 17, 2018, 6:37am UTC](https://forum.katalon.com/t/always-get-error-java-lang-nullpointerexception-when-place-webservice-test-object-to-variable/10301/2 "2018-04-17T06:37:26Z")
Can you help to post Katalon Studio logs in this case? ---
**Author:** ![Didit\_Setiawan](https://avatars.discourse-cdn.com/v4/letter/d/9de0a6/32.png) [@Didit\_Setiawan](https://forum.katalon.com/u/Didit_Setiawan)\ **Post date:** [April 17, 2018, 6:39am UTC](https://forum.katalon.com/t/always-get-error-java-lang-nullpointerexception-when-place-webservice-test-object-to-variable/10301/3 "2018-04-17T06:39:50Z")
> [Vinh Nguyen](https://forum.katalon.com/profile/33/Vinh%20Nguyen) said: > > Can you help to post Katalon Studio logs in this case? All logs of the test case ? ---
**Author:** ![Zarashima](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/zarashima/32/928_2.png) [@Zarashima](https://forum.katalon.com/u/Zarashima)\ **Post date:** [April 17, 2018, 6:41am UTC](https://forum.katalon.com/t/always-get-error-java-lang-nullpointerexception-when-place-webservice-test-object-to-variable/10301/4 "2018-04-17T06:41:02Z")
The log from that step and also logs from Katalon Studio itself: Windows (\config\.metadata\.log): MacOS (file:///Applications/Katalon%20Studio.app/Contents/MacOS/config/.metadata/.plugins/org.eclipse.ui.workbench/log): ---
**Author:** ![Zarashima](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/zarashima/32/928_2.png) [@Zarashima](https://forum.katalon.com/u/Zarashima)\ **Post date:** [April 17, 2018, 8:24am UTC](https://forum.katalon.com/t/always-get-error-java-lang-nullpointerexception-when-place-webservice-test-object-to-variable/10301/5 "2018-04-17T08:24:06Z")
Hi Didit, Please also help to send me your test project also, I think it also somehow relates to your used Web Service object as well. If you can’t send it on this topic due to sensitive information, then please send it to me privately 🙂 Regards ---
**Author:** ![xio](https://avatars.discourse-cdn.com/v4/letter/x/ed655f/32.png) [@xio](https://forum.katalon.com/u/xio)\ **Post date:** [April 17, 2018, 9:36am UTC](https://forum.katalon.com/t/always-get-error-java-lang-nullpointerexception-when-place-webservice-test-object-to-variable/10301/6 "2018-04-17T09:36:44Z")
I don`t know if it helps but try to re-type url at your test object again or just add space in the end of url and send it. ---
**Author:** ![xio](https://avatars.discourse-cdn.com/v4/letter/x/ed655f/32.png) [@xio](https://forum.katalon.com/u/xio)\ **Post date:** [April 17, 2018, 9:39am UTC](https://forum.katalon.com/t/always-get-error-java-lang-nullpointerexception-when-place-webservice-test-object-to-variable/10301/7 "2018-04-17T09:39:37Z")
![](https://s3.amazonaws.com/katalon-forum/editor/xg/i6hh99c7scw1.png "Image: https://s3.amazonaws.com/katalon-forum/editor/xg/i6hh99c7scw1.png") After that restart Katalon Studio and try to launch your test case again [image.png](https://s3.amazonaws.com/katalon-forum/editor/xg/i6hh99c7scw1.png) ---
**Author:** ![Didit\_Setiawan](https://avatars.discourse-cdn.com/v4/letter/d/9de0a6/32.png) [@Didit\_Setiawan](https://forum.katalon.com/u/Didit_Setiawan)\ **Post date:** [April 18, 2018, 4:09am UTC](https://forum.katalon.com/t/always-get-error-java-lang-nullpointerexception-when-place-webservice-test-object-to-variable/10301/8 "2018-04-18T04:09:30Z")
Hello all this problem is solved, thank you for @vinh bao quang and @3605-xio for answering my questions. ---
**Author:** ![Santhosh2](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/santhosh2/32/1267_2.png) [@Santhosh2](https://forum.katalon.com/u/Santhosh2)\ **Post date:** [December 3, 2018, 12:05pm UTC](https://forum.katalon.com/t/always-get-error-java-lang-nullpointerexception-when-place-webservice-test-object-to-variable/10301/9 "2018-12-03T12:05:55Z")
\*\*Installing Katalon 5.8.0 on Linode(Ubuntu os ) server \*\*gettting these exception java.lang.ExceptionInInitializerError at org.sikuli.api.robot.desktop.DesktopScreen.getSize(DesktopScreen.java:43)