Getting Garbage when Opening Image files after optimization

Yet another issue with this plugin(I don’t have any other plugins that deal with images).

When I open any image that has been optimized by EWWWIO, all I get is garbage like this:

RIFFºÊ�WEBPVP8 ®Ê�ðE*„8>1‰D”!!%¢pëp° iiª¡[n÷þë?cþߥ÷sü¿6_÷üÑÄïÖzðýÿÜoúÞûߥé`ÿǨ¯«ÿâõ‹üSüŸ«ï?Ðz6³S&Gø›)oÍáKþŽÀþŸÿ3ö‡¯,ý›ÝÄê€~½çH åéû_ý_ç}Rý¨ýœõ¼õÏÿ

Since it doesn’t save backups, it cannot restore the old images(which were WebP). I’m almost deleting this thing from my WordPress installation and reuploading everything as JPEGs and PNGs. If this bug is related to WebP itself, I’m dropping it.