Issues while adding to burp

[jakre1234]

java.lang.ClassNotFoundException: burp.BurpExtender
at java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:471)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:589)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
at java.base/java.lang.Class.forName0(Native Method)
at java.base/java.lang.Class.forName(Class.java:398)
at burp.ftd.a(Unknown Source)
at burp.ftd.(Unknown Source)
at burp.guy.a(Unknown Source)
at burp.kp.lambda$panelLoaded$0(Unknown Source)
at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at java.base/java.lang.Thread.run(Thread.java:829)

[c0ny1]

It is not a Burp Suite plug-in, but a woodpecker-framework plug-in

[x0d3]

so what is the solution ???