The PGAdmin 4 Server could not be Contacted: Python - pgadmin-4

I‘m sorry if this Question was asked already, However I have not found a post that addressed my problem specifically.
Also I‘m sorry for the mobile phone picture, but I had to quickly take this picture before I left.
Now concerning my problem: I tried to install pgAdmin 4 and have been encountering a lot error messages, so I had apply some changes to the code that I found online. Now I‘ve managed to kind of install it, but it still shows me a lot of errors. I was hoping someone would know how to fix this.
Thank you,
Liam
https://i.stack.imgur.com/HT0Hq.jpg

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