Hey @chris_he welcome back 
Unfortunately you ignored the template and a lot of information to help you is missing. Please edit your original post and add all required details like Nextcloud version, webserver type and version, os version, related log file content. Use the support template.
Without additional information the community members cannot help you.
Please post your redacted config.php too or check for Language & Locale — Nextcloud latest Administration Manual latest documentation especially force locale