When uploading
ppt 35 pages 2.1MB returns
413 Request Entity Too Large
nginx/1.10.3 (Ubuntu)
when preuploading
pdf 35 pages 3.2MB returns
413 Request Entity Too Large
nginx/1.10.3 (Ubuntu)
when preuploading

Normal in Meeting + Upload Presentation is working fine - no problem
For me adding client_max_body_size 20M; to the "nginx-vhost" in /etc/nginx/sites-available worked. Then it looks like
server {
server_name bbb.example.org;
listen 443 ssl;
listen [::]:443 ssl;
client_max_body_size 20M;
Thanks for the advise @github-luckow-org. I changed it to 30M as that's the default size limit for BBB according to the documentation.
Pull request #1977 updates the greenlight.nginx to allow uploads up to 25mb which should mostly fix this problem. Still, it would be nice to upload files via JavaScript and react to a 413 status to show users a sensible error instead of relying on the somewhat ugly Nginx error message where users end up outside of Greenlight.
fixed in 2.7.1
Most helpful comment
fixed in 2.7.1