Unable to start headless burp

[rsinghmdp]

Hi Team, I have Burp pro version with headless burp extension, I saw the documentation and downloaded code and build and copied the snapshot jar file to burp installation directory. Using the below command and getting the error:

D:\Installer>"C:\Program Files\BurpSuitePro\jre\bin\java.exe" -Xmx4G -Djava.awt.headless=true -classpath headless-burp-proxy-master-SNAPSHOT-jar-with-dependencies.jar:burpsuite_pro.jar burp.StartBurp --project-file=web-scan.burp -c config.xml -v
Error: Could not find or load main class burp.StartBurp
Caused by: java.lang.ClassNotFoundException: burp.StartBurp

Using below command as mentioned in documentation but it is stuck.
D:\Installer>"C:\Program Files\BurpSuitePro\jre\bin\java.exe" -Xmx4G -Djava.awt.headless=true -classpath burpsuite_pro.jar burp.StartBurp --project-file=web-scan.burp -c config.xml -v
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by burp.b2w (file:/D:/Installer/burpsuite_pro.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of burp.b2w
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release

Kindly help

[gosirys]

Same just tested on macOS