Issue when following along the Listener guide page

I directly copied the exact code from the below guide page on Listeners. I don't know how to fix this and not sure what to do. https://www.sapphirejs.dev/docs/Guide/listeners/creating-your-own-listeners

Sapphire Framework

Creating your own listeners | Sapphire

Similar to what you learned in both Creating Commands and [Creating

Solution:

run method is missing

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