avast extension in google chrome always got this error

this is the error. almost everytime when i use google chrome.

this is the picture
http://postimg.org/image/bagw9yu9z/

I am not using Chrome and AOS add-on ,but it looks like there is conflict with Adblock extension.
Try to disable EasyPrivacy list (if you have one) in Adblock because AOS provides tracking protection also.
Also try to reinstall avast online security:
https://chrome.google.com/webstore/detail/avast-online-security/gomekmidlodglbbmalcneegieacbdmki
Maybe there is no conflict with Adblock Plus:
https://chrome.google.com/webstore/detail/adblock-plus/cfhdojbkjhnklbpkdaibdccddilifddb
I don’t know if this helps.

maybe because adblock extension interaction

This is an ongoing issue just disable the “avast online security”.
Personally i use PrivDog.

Add this custom filter (exception rule) to the Adblock:

@@data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAFElEQVR4XgXAAQ0AAABAMP1L30IDCPwC/o5WcS4AAAAASUVORK5CYII=

Or you can use Adblock Plus