I had the same problem happen to me and tried a bunch of things. I finally narrowed it down to this: The siteurl was wrong.
The siteurl can be found in the wp_options table of your WordPress database. Look for the row where the option_name = “siteurl”. The option_value column should point to the root of your WordPress blog, not the root of your web site.
For example, I inadvertantly pointed my URL to:
https://www.empiricalmarketer.com
…instead of
https://www.empiricalmarketer.com/blog
Once I changed the option_value to the second URL above, everything started looking (and working) fine.
Hope this helps someone.
== Ross ==
Ross W. Lambert
https://www.empiricalmarketer.com
https://www.sonicpageblaster.com