SELinux context for the custom data directory is not correct.
To resolve the issue perform the following steps:
1. Edit the file /etc/cb/nginx/conf.d/cb.conf (or the cb-multihome.conf file, depending which is currently being used).
2. Comment out the below include statement by including a hash mark in front, such as:
# include /var/cb/nginx/props/nginx.runtime.cblr_api.client_body_temp_path.prop;
3. Restart the cb-nginx service:
service cb-nginx restart
This issue is resolved in v5.0.1. An upgrade to v5.0.1 will also correctly set the SELinux context. Following an upgrade the User will be prompted to reconcile changes in the Nginx cb.conf file, while a .rpmnew file will be located in the /etc/cb/nginx/conf.d directory with this include statement un-commented.