I am in the process of upgrading an MSM configuration from EE 2.11.x to 3.5.7 and have run into the following error on the MSM site:
Your system folder path does not appear to be set correctly. Please open the following file and correct this: index.php
Before the upgrade the path I was using to reference the system folder was this:
That has not changed but now I get the error message.
Any guidance on how to resolve this?