When I export from ai. to jpg. these faint grey lines on right and bottom appear.

[#1]

When I export from ai. to jpg. these faint grey lines on right and bottom appear.

Does anyone have exerperice with this?

I fond this thread where someone had this issue but I do understand the solution: https://community.adobe.com/t5/illustrator/grey-lines-around-exported-jpg/td-p/11314890?page=1

My project requires a jpg submission of 640 px by 480 px 300 dpi. 

Thanks in advance for the help!

[#2]

Can you post your image and describe its size, settings and the exact steps you took to export it?