Modifying Apache sites path address under mac fails after restarting

I changed the mac Apache sites path address and restarted, prompting the server to be turned on
Modify it back to the original path and you can continue to access it. Does anyone know what's going on?

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I changed the mac Apache sites path address and restarted, prompting the server to be turned on
Modify it back to the original path and you can continue to access it. Does anyone know what's going on?

You can’t just change the DocumentRoot above. You also need to change the Directory in the lower row to be the same as the DocumentRoot.