Return None

[Jmallone]

In this part

blockchain-book/chapters/chapter_7/funcoin/server.py

Line 70 in 8642a7b

self.external_ip = await self.get_external_ip()

the code return none all times.
for fix it i remove self.external_ip =

await self.get_external_ip()

[Leonyxtested]

Thanks, I get another error but it's good to know where it can go wrong.