Generated static file cannot render Images

[kush-blog]

The file that has been generated has a bug which I need to fix everytime I deploy.
In the static index.html file for my new Post and the home Page, it renders the image incorrectly, the file name is changed and an extra "g" or "pg" or "jpg" is getting added to the images
For ex in this tag
img class="post-card-image" srcset="content/images/size/w300/2019/06/chennai-img.jpeg 300w,
content/images/size/w600/2019/06/chennai-img.jpegg 600w,
content/images/size/w1000/2019/06/chennai-img.jpegpg 1000w,
content/images/size/w2000/2019/06/chennai-img.jpegjpg 2000w" sizes="(max-width: 1000px) 400px, 700px" src="content/images/size/w600/2019/06/chennai-img.jpeg" alt="PLODDING START TO AN ENERGETIC WIN - MY SIH 2019 EXPERIENCE">

If you see the image sources, extra text gets added at the end that i have to remove manually.
Please help

[kali3808]

please share your sys info