Iḿ having the MANIFEST error again

Hello guys…
I reinstalled my Ubuntu 20.04 and mannage to install the SDK and URSIM 5.11 I only have installed JAVA 1.8.

top@toppc:~/ur/ursim-$ java -version
openjdk version “1.8.0_312”
OpenJDK Runtime Environment (build 1.8.0_312-8u312-b07-0ubuntu1~20.04-b07)
OpenJDK 64-Bit Server VM (build 25.312-b07, mixed mode)

I mannage to compile the HelloWorld example but when I try to run it in the Ursim it gives me the ERROR:

Blockquote12:34:34.831 ERROR - Error starting URCap ‘Hello World Swing’: This URCap has an invalid manifest file (‘META-INF/MANIFEST.MF’). {thread: Thread-5 , loggerClass: com.ur.urcap.osgi.ConsoleLogger}

I attached the compiled example.
com.ur.urcap.examples.helloworldswing.zip (92.7 KB)

Can anyone help me to solve it, please!?!?