Background of the issue:
We migrated the development site swozi25.chancental.com into swozi.com and went live. I set the development site to production site and switched the API key from chancental.com to swozi.com.
Note: we have a wp multisite with swozi.com and usa.swozi.com
Symptoms:
The site is shown as a development site after editing in saved mode due to an HTTP 500 error.
Questions:
Why is the site shown as a development site after migration?
How can I resolve the HTTP 500 error?