Steps to clone the android dlms project and build apk

Hi sir,
I'm using latest version
Android Studio Otter 2 Feature Drop | 2025.2.2 Patch 1
Build #AI-252.27397.103.2522.14617522, built on December 19, 2025
Runtime version: 21.0.8+-14196175-b1038.72 amd64
VM: OpenJDK 64-Bit Server VM by JetBrains s.r.o.
Toolkit: sun.awt.windows.WToolkit
Windows 10.0
GC: G1 Young Generation, G1 Concurrent GC, G1 Old Generation
Memory: 2048M
Cores: 4
Registry:
ide.windowSystem.autoShowProcessPopup=true
ide.experimental.ui=true

Getting gradle sync issues

null cannot be cast to non-null type kotlin.String
null cannot be cast to non-null type kotlin.String

Gradle's dependency cache may be corrupt (this sometimes occurs after a network connection timeout.)

Re-download dependencies and sync project (requires network)
The state of a Gradle build process (daemon) may be corrupt. Stopping all Gradle daemons may solve this problem.

Stop Gradle build processes (requires restart)
Your project may be using a third-party plugin which is not compatible with the other plugins in the project or the version of Gradle requested by the project.

In the case of corrupt Gradle processes, you can also try closing the IDE and then killing all Java processes.

project image: https://ibb.co/Xftkq9VB

The Folder i opened in android studio

C:\Users\Dell\AndroidStudioProjects\Gurux.DLMS.Android-master\Gurux.DLMS.Android-master\Java

No sir,

I Tried fresh today

Steps i followed to create android project

Step 1: Download the project from github in .zip
https://github.com/Gurux/Gurux.DLMS.Android

Step 2: Extracted zip file in C:\Users\Dell\AndroidStudioProjects\Gurux

Step 3: Onpen android studio > Closed the existing Project > Open the folder
C:\Users\Dell\AndroidStudioProjects\Gurux\Gurux.DLMS.Android-master\Java
in Android Studio

Step 4: While gradle build time it shows gradle sync issue

build log: null cannot be cast to non-null type kotlin.String
null cannot be cast to non-null type kotlin.String

Gradle's dependency cache may be corrupt (this sometimes occurs after a network connection timeout.)

Re-download dependencies and sync project (requires network)
The state of a Gradle build process (daemon) may be corrupt. Stopping all Gradle daemons may solve this problem.

Stop Gradle build processes (requires restart)
Your project may be using a third-party plugin which is not compatible with the other plugins in the project or the version of Gradle requested by the project.

In the case of corrupt Gradle processes, you can also try closing the IDE and then killing all Java processes.