Extension Build Failed In CMD Error- XML file dosent exist

Extensions
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#1

i am using
https://editor.appybuilder.com
for a while,i now switched to intellij IDEA for some reasons
i did well in all part now i have build it and got the error

Buildfile: build.xml does not exist! 
Build failed

this error is exactly same as

the only difference is
@Xoma said he have build.xml file
and i don’t have it and don’t know how to get it please some one help

but the topic is close now

as @Shreyash,@Mateja,@xoma participated there i ask you to help me others also help please

#2

Post your code and error log here.

#3
#4

You should ask these kind of questions in the app inventor open source development category. This category is for showing your extensions or getting ideas.

#5

ok i will post there anyway solve it some how in app inventor it restricts me to put only 2 links as it says i am new user there so i have some issues

#6