I uninstalled WordPress and reinstalled.
I followed the instructions in this post and in the documentation.
I am running WordPress 5.4.2 and PHP 7.2
I also tried using the WordPress importer and go the same 404 error.
Here is the log file from the one-setp importer:
—Downloaded files—
The import files for: CoSolu Demo were successfully downloaded!
Initial max execution time = 300
Files info:
Site URL = http://dev.acstek.us
Data file = *DELETED*/wp-content/themes/cosolu/inc/cosolu-framework/demo-data/quickfix-demo.xml
Widget file = *DELETED*/wp-content/themes/cosolu/inc/cosolu-framework/demo-data/quickfix-widgets-demo.json
Customizer file = not defined!
Redux files:
cosolu_opt -> *DELETED*/wp-content/themes/cosolu/inc/cosolu-framework/demo-data/redux_options_demo_vr1.json
This is a screen shot of the error:
http://acstek.us/images/dev.acstek.us.png
Thanks For your help on this!