found {result:560,type:exception} when selecting value from drop-down list

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i found 560 error when selecting value from drop-down list, and this is series drop-down list.  My example..   Drop-down list A ==> soap type, e.g. bar type, liquid type Drop-down list B ==> size, e.g. 160 ml., 250 ml. Drop-down list C ==> packaging , e.g. plastic, sachet Drop-down list D ==> brand   Below are scree     Error throw when I select drop-down list A, then I can't continue my testing.  
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1 answers
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Hi Jirayu,

                Please check the following link:

https://community.mendix.com/link/space/app-development/questions/115891

answered