Unable to load images from within a text widget

I am unable to load some social media icons saved in a subdirectory (images). I tried using both relative and absolute paths. I don’t know what to do! could you please help??
Here is a sample of code used:
‘<img width=”35″ height=”35″ alt=”twitter-img” src=”https://localhost/easing/wp-content/themes/rt-marketer/socialIcons/48/Twitter.png”>&#8217;

I also tried this one:
‘<img width=”35″ height=”35″ alt=”twitter-img” src=”./socialIcons/48/Twitter.png”>’