Can't login to Instagram

I've followed the installation guide for my new Raspberry Pi 3B+.
However, first of all I noticed the installation guide misses the fact that you should run
sudo xvfb-run pip3 install Instapy if you want to run using
sudo xvfb-run python quickstart.py

However when I run this I can't login:
CRITICAL Unable to login to Instagram! You will find more information in the logs above.

The log contains the following:
1567883020133 mozrunner::runner INFO Running command: "/usr/bin/firefox" "-marionette" "-foreground" "-no-remote" "-profile" "/tmp/rust_mozprofile.mmA6qpFAH3s5"
1567883031325 Marionette INFO Listening on port 39223
1567883031442 Marionette WARN TLS certificate errors will be ignored for this session
console.log: Accessibility service init or shutdown observer does not exist.
1567883279664 mozrunner::runner INFO Running command: "/usr/bin/firefox" "-marionette" "-foreground" "-no-remote" "-profile" "/tmp/rust_mozprofile.ibjiuqDwRNjE"
1567883294983 Marionette INFO Listening on port 40529
1567883295069 Marionette WARN TLS certificate errors will be ignored for this session
console.log: Accessibility service init or shutdown observer does not exist.
1567883538993 mozrunner::runner INFO Running command: "/usr/bin/firefox" "-marionette" "-foreground" "-no-remote" "-profile" "/tmp/rust_mozprofile.bONa7TMcrLdq"
1567883551164 Marionette INFO Listening on port 37191
1567883551303 Marionette WARN TLS certificate errors will be ignored for this session
console.log: Accessibility service init or shutdown observer does not exist.

Any advice?

Start by reviewing the installation guide and the commands in the issue, especially the sudo xvfb-run pip3 install Instapy prerequisite. Reproduce the login attempt on a Raspberry Pi 3B+ and inspect the Firefox/Marionette log output. Done means the guide includes the required installation step and the login failure has documented guidance or a confirmed cause.

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