what does it mean to "SSHed into the instance"
<p>I'm having an error; “decoder jpeg not available” with Pillow on AWS Elastic Beanstalk. I googled around and saw solution but I don't quite understand this. The solution says </p>

<pre><code>I SSHed again into the instance and reinstalled Pillow through pip (/opt/python/run/venv/bin/pip), not before I has had sure libjpeg-devel was on environment before Pillow.

I ran selftest.py and it confirmed that I had support for jpeg. 
</code></pre>

<p>In my understanding, I believe the solution is saying create new user and get new ssh key and uninstall pillow. Then Install libjpeg using such command </p>

<pre><code>sudo apt-get install libtiff5-dev libjpeg8-dev zlib1g-dev libfreetype6-dev liblcms2-dev libwebp-dev tcl8.6-dev tk8.6-dev python-tk
</code></pre>

<p>and then reinstall pillow. Then restart the app server?</p>