HTTPS causes an error: Third party libraries not installed
"Third party libraries not installed. Make sure that composer has required libraries in the concrete/ directory." ssl is enabled on my site, so I'm not exactly sure where I've gone wrong.
I used the tutorial for a multi-site approach because I've used it before and it makes it easier to do upgrades and downgrades because the concrete directory is a symbolic link. I used this tutorial. I thought this worked for me before: