I have the same issue here. I upgraded from 1.8.2 to 1.8.3, the Docker version. And I tried to reproduce what for me is a bug. You can reproduce it too if you follow these steps:
I have a custom theme that I put in:
I opened a bash in the container:
docker exec -ti xibodocker_cms-web_1 bash
And once in the container I compressed the views,css and img folders to transfer them into my theme:
tar -czf /var/www/cms/web/views.tar.gz views
tar -czf /var/www/cms/web/css.tar.gz css
tar -czf /var/www/cms/web/img.tar.gz img
I quit the container and download the three archives through http://myxiboadress/views.tar.gz and do the same with css and img
Then I extract the three files to three folders (css, img and views) under home/docker/xibodocker/shared/cms/web/theme/custom/mytheme
That way I can modify the files and adapt them to the colors of my company.
Once I do this, I change the file config.php and add the line at the end:
'view_path' => PROJECT_ROOT . '/web/theme/custom/mytheme/views'
Once I do this, the statistics menu doesn't work anymore and I have the message like the user d3fect:
Unexpected Error, please contact support.
If I comment the view path line, it works again.
Also I noticed something: the statistics menu isn't at the same place whether I comment or uncomment the view path line. There is a new topic: REPORTING. Maybe it has something to do with the problem ?
Can you help me please ?