I upgraded our TL MTE system from 18.104.22.168 to 9.0.2 this evening. Afterwards I noticed the graph thumbnails now show broken links for CPU Usage, Memory Usage, Processes, et al.
Clicking on any of these thumbnails takes you to a page that displays "nginx error!
The page you are looking for is not found."
Had a look at /var/log/nginx/error.log and it is polluted with entries such as "2018/08/25 23:39:39 [error] 2170#0: *273 open() "/usr/share/nginx/html/maint/munin/localhost/localhost/cpu.html" failed (2: No such file or directory), client: 127.0.0.1, server: _, request: "GET /maint/munin/localhost/localhost/cpu.html HTTP/1.0", host: "127.0.0.1""
The directory /usr/share/nginx/html contains no subdirectories and only a handful of files (404.html, 50x.html, index.html, nginx-logo.png, poweredby.png.)
I see the file cpu.html still exists at /var/www/html/munin/localhost/localhost/cpu.html and is current.
What can be done to resolve this issue?