Google Adsense crawling error “.com/wp-admin/customize.php?url=http%3A%2F%2F”

My new Google Adsense crawling error:

http://adwop.com/wp-admin/customize.php?url=http%3A%2F%2Fadwop
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As today, I got another crawling error, I still don’t have any clue how could it happen and how to fix it.

Here are the message I received about this error:

“Crawler errors
Our crawler was unable to access your page to determine its content and display ads. When our crawler can’t access your content we won’t show ads, resulting in lower revenue and coverage. Follow the links in the ’How to fix’ column to correct these errors.
Blocked URLs/ Error/ Robot Denied
http://mysite.com/wp-admin
http://mysite.com/wp-admin/customize.php”

I’m feel tired about this type of error. I’m thinking about giving up GA ads on all my sites and switch to other ad types.

As I figured out that the only thing may cause this happens is I used Google Chrome as my internet browser. I accessed all of my sites and others through Google Chrome instead of Internet Explorer. I stopped using IE last couple years; maybe it’s time to switch back to IE in order to maintain my website revenue without getting frustrated. This is what I think and I don’t known whether it is the reason/best solution or not.