Warning: include(/home/healthba/public_html/var/view_preprocessed/pub/static/vendor/magento/module-theme/view/base/templates/root.phtml): failed to open stream: No such file or directory in /home/healthba/public_html/vendor/magento/framework/View/Result/Page.php on line 326
Check to see if
dev/template/minify_html is enabled and if it is, disable it.
You can check this in the admin under Stores -> Configuration -> Advance -> Developer -> Template Settings or in the
core_config_table filtering by the path
If disabling this fixes the issue, it is very likely that there is something wrong in your custom theme.
I would carry on debugging, perhaps switch the theme to luma or blank and see if they work with
minify_html enabled, etc.
var folder content by below command,
rm -rf var/generation/ var/view_preprocessed/ pub/static/frontend/ pub/static/_requirejs/ var/cache var/di var/page_cache pub/static/_cache
Now, give full permission to the
sudo chmod -R 0777 var/
If the above method is not working then check your file and folder permissions, You need to give permissions to your Magento 2 instance. Check Magento Docs for file permissions
Hope it helps.