Question Gradle build failed help!!

Hello guys, I have asked this question before, please I really need your help, I have been stuck on this for weeks, please would really love your answers thank you
Version: 2020.3.3f1
I have sdk and ndk, jdk installed
Please help me

CommandInvokationFailure: Gradle build failed.
C:\Program Files\Java\jdk1.8.0_77\bin\java.exe -classpath "C:\Program Files\Unity\Editor\Data\PlaybackEngines\AndroidPlayer\Tools\gradle\lib\gradle-launcher-5.6.4.jar" org.gradle.launcher.GradleMain "-Dorg.gradle.jvmargs=-Xmx4096m" "assembleDebug"

stderr[

FAILURE: Build failed with an exception.

* What went wrong:
A problem occurred configuring project ':launcher'.
> Could not resolve all artifacts for configuration ':launcher:classpath'.
> Could not resolve com.android.tools.build:gradle:3.6.0.
Required by:
project :launcher
> Could not resolve com.android.tools.build:gradle:3.6.0.
> Could not get resource 'https://dl.google.com/dl/android/maven2/com/android/tools/build/gradle/3.6.0/gradle-3.6.0.pom'.
> Could not GET 'https://dl.google.com/dl/android/maven2/com/android/tools/build/gradle/3.6.0/gradle-3.6.0.pom'.
> Connect to dl.google.com:443 [dl.google.com/216.58.223.238] failed: Connection timed out: connect
> Could not resolve com.android.tools.build:gradle:3.6.0.
> Could not get resource 'https://jcenter.bintray.com/com/android/tools/build/gradle/3.6.0/gradle-3.6.0.pom'.
> Could not GET 'https://jcenter.bintray.com/com/android/tools/build/gradle/3.6.0/gradle-3.6.0.pom'.
> jcenter.bintray.com

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 1m 25s
Picked up JAVA_TOOL_OPTIONS: -Dfile.encoding=UTF-8
]
stdout[
Starting a Gradle Daemon, 6 incompatible and 2 stopped Daemons could not be reused, use --status for details
]
exit code: 1
UnityEditor.Android.Command.WaitForProgramToRun (UnityEditor.Utils.Program p, UnityEditor.Android.Command+WaitingForProcessToExit waitingForProcessToExit, System.String errorMsg) (at <2c6e9a95f1dd4e06ad71afcd2684dcb7>:0)
UnityEditor.Android.Command.Run (System.Diagnostics.ProcessStartInfo psi, UnityEditor.Android.Command+WaitingForProcessToExit waitingForProcessToExit, System.String errorMsg) (at <2c6e9a95f1dd4e06ad71afcd2684dcb7>:0)
UnityEditor.Android.Command.Run (System.String command, System.String args, System.String workingdir, UnityEditor.Android.Command+WaitingForProcessToExit waitingForProcessToExit, System.String errorMsg) (at <2c6e9a95f1dd4e06ad71afcd2684dcb7>:0)
UnityEditor.Android.AndroidJavaTools.RunJava (System.String args, System.String workingdir, System.Action`1[T] progress, System.String error) (at <2c6e9a95f1dd4e06ad71afcd2684dcb7>:0)
UnityEditor.Android.GradleWrapper.Run (UnityEditor.Android.AndroidJavaTools javaTools, System.String workingdir, System.String task, System.Action`1[T] progress) (at <2c6e9a95f1dd4e06ad71afcd2684dcb7>:0)
Rethrow as GradleInvokationException: Gradle build failed
UnityEditor.Android.GradleWrapper.Run (UnityEditor.Android.AndroidJavaTools javaTools, System.String workingdir, System.String task, System.Action`1[T] progress) (at <2c6e9a95f1dd4e06ad71afcd2684dcb7>:0)
UnityEditor.Android.PostProcessor.Tasks.BuildGradleProject.Execute (UnityEditor.Android.PostProcessor.PostProcessorContext context) (at <2c6e9a95f1dd4e06ad71afcd2684dcb7>:0)
UnityEditor.Android.PostProcessor.PostProcessRunner.RunAllTasks (UnityEditor.Android.PostProcessor.PostProcessorContext context) (at <2c6e9a95f1dd4e06ad71afcd2684dcb7>:0)
Rethrow as BuildFailedException: Exception of type 'UnityEditor.Build.BuildFailedException' was thrown.
UnityEditor.Android.PostProcessor.CancelPostProcess.AbortBuild (System.String title, System.String message, System.Exception ex) (at <2c6e9a95f1dd4e06ad71afcd2684dcb7>:0)
UnityEditor.Android.PostProcessor.PostProcessRunner.RunAllTasks (UnityEditor.Android.PostProcessor.PostProcessorContext context) (at <2c6e9a95f1dd4e06ad71afcd2684dcb7>:0)
UnityEditor.Android.PostProcessAndroidPlayer.PostProcess (UnityEditor.BuildTarget target, System.String stagingAreaData, System.String stagingArea, System.String playerPackage, System.String installPath, System.String companyName, System.String productName, UnityEditor.BuildOptions options, UnityEditor.RuntimeClassRegistry usedClassRegistry, UnityEditor.Build.Reporting.BuildReport report) (at <2c6e9a95f1dd4e06ad71afcd2684dcb7>:0)
UnityEditor.Android.AndroidBuildPostprocessor.PostProcess (UnityEditor.Modules.BuildPostProcessArgs args, UnityEditor.BuildProperties& outProperties) (at <2c6e9a95f1dd4e06ad71afcd2684dcb7>:0)
UnityEditor.PostprocessBuildPlayer.Postprocess (UnityEditor.BuildTargetGroup targetGroup, UnityEditor.BuildTarget target, System.String installPath, System.String companyName, System.String productName, System.Int32 width, System.Int32 height, UnityEditor.BuildOptions options, UnityEditor.RuntimeClassRegistry usedClassRegistry, UnityEditor.Build.Reporting.BuildReport report) (at <c9b5231e365148a4bc210cc4e439206d>:0)
UnityEngine.GUIUtilityrocessEvent(Int32, IntPtr, Boolean&)

I hope i will get answers, thank you!.

 

The answers haven't changed since I posted them for you.

Curiously you simply said those steps didn't work, and yet you didn't tell us if you were even able to make a blank project build.

You're gonna keep wasting your time until you verify a blank project builds.

I'll post the steps again for you. There's absolutely NOTHING magical here, just methodical testing steps.

How to troubleshoot build failures:

First, make a blank project with a single blank scene and prove that it builds successfully.

If the blank project does NOT build, go fix your Unity installation or your other tools, such as Android SDK, NDK, JDK, etc. It may even be necessary to change to a different version of Unity3D. It is generally best to stay with LTS versions of Unity3D.

Until you can build a blank project to the target platform, don't fiddle with anything else.

Once you can build a blank project, now bisect the problem by bringing over parts of your current project and building it one subsystem at a time, perhaps stubbing things out that might trigger compiler errors.

Most often things that prevent building are third-party libraries such as Firebase.

Once you identify the subsystem, go to the documentation for it and make sure you are doing it correctly.

It may also be helpful to work through a tutorial or two for whatever subsystem is making the build fail.

Android build not building:

Recently (circa July 2022) there have been reports of Unity's installer failing to install the Android Tools.

https://forum.unity.com/threads/cant-build-for-android.1306098/

Here was how I brought up Unity2020.3.41 and the Android SDK 31 on October 30, 2022 (edited on August 23, 2023 to include Android SDK 33...):

https://forum.unity.com/threads/aab...y-2021-3-8-with-jdk-1-8.1322211/#post-8551193

Android Gradle errors and other related stuff:

https://forum.unity.com/threads/unity-gradle-bug-please-help.1368018/#post-8625789

 

Okay
Well I made a new blank project
And tried building
But I still couldn't build it
My firewall is disabled
My unity version is unity 2020.3.3f1