Unable to send or receive p on whatsapp after copying whatsapp media to sd card from file manager

[Android Central Question]

So I went to the file manager and transfered "Whatsapp Media" folder to sd card.
After this I was no longer able to send or receicve photos or videos.
The Error while sending photos is "the selected file is not a photo"
I did copy the folder back to internal storage but it turned into some unsupported file format.
Please HELP!!!