Question Error when building Android project "ERROR: JAVA_HOME is not set and no 'java'"

(I should mention i am using Firebase database with this project) I transferred this unity project from my laptop to my PC (put the project file from my laptop on a drive and put it on my pc). Now when I try to export it it says: "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH." and
"CommandInvokationFailure: Failed to update Android SDK package list.
C:\Program Files\Unity\Hub\Editor\2020.3.5f1\Editor\Data\PlaybackEngines\AndroidPlayer\SDK\tools\bin\sdkmanager.bat --list". Other projects on the same version(2020.3.3f1) that I started on the PC work at export but I changed it to 2020.3.5f1 but still nothing. I am using C# so i dont know what that has to do with Java. I am going crazy over this, please help me...

 

Android apps are built primarily using Java. The Java SDK is therefore a requirement to build Android apps.

You need to install the appropriate Java SDK.

You can install everything you need from the Unity Hub:

 

They were installed. Wierdly enough, i opened another ptoject, attached my Registries and Google LLC stuff and now it works. Thx anyways