Rush Build Failed

[AayushThapaa]

Describe the bug
I am having issue always, i cant build the extension.

Screenshots

Desktop (please complete the following information):

• OS: Windows

Additional context
I am just doing rush build, its not working . I have java 8

[imjjrobo]

PS D:\Extensions\test2\src> javac D:\Extensions\test2\src\rahim\indian\test2\Test2.java
D:\Extensions\test2\src\rahim\indian\test2\Test2.java:3: error: package com.google.appinventor.components.annotations does not exist
import com.google.appinventor.components.annotations.SimpleFunction;
^
D:\Extensions\test2\src\rahim\indian\test2\Test2.java:4: error: package com.google.appinventor.components.runtime does not exist
import com.google.appinventor.components.runtime.AndroidNonvisibleComponent;
^
D:\Extensions\test2\src\rahim\indian\test2\Test2.java:5: error: package com.google.appinventor.components.runtime does not exist
import com.google.appinventor.components.runtime.ComponentContainer;
^
D:\Extensions\test2\src\rahim\indian\test2\Test2.java:6: error: package com.google.appinventor.components.runtime.errors does not exist
import com.google.appinventor.components.runtime.errors.YailRuntimeError;
^
D:\Extensions\test2\src\rahim\indian\test2\Test2.java:7: error: package com.google.appinventor.components.runtime.util does not exist
import com.google.appinventor.components.runtime.util.YailList;
^
D:\Extensions\test2\src\rahim\indian\test2\Test2.java:9: error: cannot find symbol
public class Test2 extends AndroidNonvisibleComponent {
^
symbol: class AndroidNonvisibleComponent
D:\Extensions\test2\src\rahim\indian\test2\Test2.java:11: error: cannot find symbol
public Test2(ComponentContainer container) {
^
symbol: class ComponentContainer
location: class Test2
D:\Extensions\test2\src\rahim\indian\test2\Test2.java:16: error: cannot find symbol
public int SumAll(YailList integers) {
^
symbol: class YailList
location: class Test2
D:\Extensions\test2\src\rahim\indian\test2\Test2.java:15: error: cannot find symbol
@simplefunction(description = "Returns the sum of the given list of integers.")
^
symbol: class SimpleFunction
location: class Test2
D:\Extensions\test2\src\rahim\indian\test2\Test2.java:23: error: cannot find symbol
throw new YailRuntimeError(e.toString(), "NumberFormatException");
^
symbol: class YailRuntimeError
location: class Test2
10 errors
PS D:\Extensions\test2\src>

[shreyashsaitwal]

@imjjrobo You need to use the build command (rush build) from the project directory (in your case, D:\Extensions\test2) to build the extension.