Invalid or corrupt jarfile

[lsr1006]

I am attempting to run this bot on Ubuntu. I followed the instructions at https://jmusicbot.com/setup/ however upon running the .jar file, I get the following error:

Error: Invalid or corrupt jarfile JMusicBot-0.3.6.jar

For the sake of clarity, here is what I did:

1. Installed Java. Here is the java version:
   

2. Created a directory for the jar. Used "wget" command to download the .jar file from github:
   wget https://github.com/jagrosh/MusicBot/releases/tag/0.3.6/JMusicBot-0.3.6.jar

3. Attempted to run the .jar with the following command:
   java -Dnogui=true -jar JMusicBot-0.3.6.jar