# AdBlock blocks requests?

Recently, I came across with a strange bug. 
My frontend was trying to send a PUT request to my backend but it was never reaching to server. 
Also, there was not any response object. It was pretty hard to find the cause at first since I was suspecting from the frontend code. 

After a while, it turned out that AdBlock was thinking that my request is not able to pass their conditions. 
The reason behind that AdBlock has a variety of filter mechanisms and one of them is by URL patterns. Thus, if it matches with your request url, then you are basically not allowed to send a request to your backend. 

One of these lists was EasyList.  [You can access to list from here](https://easylist.to/easylist/easylist.txt) In this list, there are some url patterns like /admin/banners/* and indeed my URL was matching with this pattern!

After the changes in both backend and frontend code to not to match with this pattern, I was able to send requests again. 

If you are using AdBlock, you can check the filters from its options/Filter lists. And if you are using another one, I am sure that you can find the relevant options. If you are not sure whether the problem is related with your ad-blocker, I recommend to try to send your requests after disabling it or from another browser that does not have any ad-blocker.

Have a nice day!


References

 https://stackoverflow.com/questions/53597083/how-to-prevent-ad-blocker-on-my-sites-routes