ERROR: "None of the DNS query names exist" - Please help

MongoDB University M220P: MongoDB for Python Developers
#1

Please help:

I’m trying to get set up for M220P, Chapter 0. When I click the URL to load mflix, I get:
“Unable to fetch movies” on my HTML page. Back in the terminal, the error is:

dns.resolver.NXDOMAIN: None of DNS query names exist: _mongodb._tcp.., _mongodb._tcp..

Looks like the address isn’t loading?

I’ve read the other entries here and in Stack Overflow regarding this error. It seems to usually be associated with a bad connection string. I have tested my string in Compass, in Mongo shell, AND in Python - the string seems to work everywhere else. Specifically the string is:

MFLIX_DB_URI = mongodb+srv://M220-student:M220-password@mflix.thya5.mongodb.net/myFirstDatabase?retryWrites=true&w=majority

Any help would be greatly appreciated. I’ve been beating my head against a wall for about 4 hours now, and not sure what to do next. The really frustrating thing is that I had this working when I started the course last September, but I’ve changed computers, and having no luck this time. Thanks in advance.

#2

Your connection string is correct.

Have you activated your virtual environment with virtualenv or ananconda?

Have you run the commands that install the requirements?

#3

Yes to virtual environment, yes, to requirements - sorry forgot to mention. PROBLEM SOLVED! Turns out my [TEST] string was correct as above, but my [PROD] string was not. I thought that at this point the application would be using the [TEST] string, so I didn’t pay too much attention to the [PROD] section. Thanks for your help - I’m back in business.

#4