Can any body can help me to fix this popup ads which is been triggered from other server I am enclosing a screenshot of the source in the following image.
Thanks for providing me a detailed instruction, Now this problem of popup ads have been resolved..
I simply installed a ssl certificate and my problem is gone, but I am not able to figure out what was causing me this problem.
It appears that you are using the Firefox browser.
In previous encounters with similar issues, it has proven to work if you ....
remove the complete Firefox profile ( saving your bookmarks first, extensions can be problematic but can be got at from source again - to eliminate the issue.)
allow Firefox to build a new profile on relaunch
test for the issue again.
You can also test the issue with a different browser to see if the problem is unique to Firefox or is cross browser.
It does appear to be some sort of malware hook which could attach itself in the profile, so rebuilding a fresh profile could well get rid of it also.
It is just a thought and no guarantee that it will solve it but worth a try, along with the other suggestion made also.
Thanks ~Z~ Man and Steven for writing me,
I will try both the solutions and let you know which method worked for me.
Do you have shell access to our server?
grep -Rni "allashail.club" .
It has nothing to do with OSSN...
It is a form of malware and there are various sites that can give you suggestions as to how to remove it...
Google is your friend...