We face a issue with our Magento 2.3.4, we got a blank page error when we visit the frontend.
ini_set('display_errors', 1); but still no error is displayed.
We got a debug.log file with the following errors:
[2020-03-17 10:33:01] main.INFO: Broken reference: the '' element cannot be added as child to '', because the latter doesn't exist  
I already tried to remove all cache etc, but I can not find and solve this issue.
Any idea how to solve this?