zed attack proxy tool eroor : JVM_bind

I have configured my google chroome browser with ZAP default Port "8080" and "LocalHost" as found google . and while entering any http request it says Look proxy settings Already in use: JVM_Bind

I have checked with the command in system netstat -an it shows port 8080 is Listening mode .

Also not able to add to add the certificates to my browser, checked lots of stuffs from google , also tried with reinstalling the software, so Kindly help me with proper solutions .

• Q1> What is that JVM_Bind error while starting .
• Q2> How to start recording in my browser .
• Q3> Is there any option to change the default proxy setting of ZAP Tool .
• Q4> How to Install the Certificates for "https" types request.

Plz understand the issue and proper solution .

Thanks in advance.