[Q] having trouble flashing with vs980 topic

I cant flash any roms or kernels without it saying this flash.checking for md5 file....
Skipping md5 check: no md5 file found
Verifying zip signature...
E: Zip signature verification failed: 1
Error flashing zip '/sdcard/download/malladus-v
uodating partition details...

FAILED

Ive wiped everything ive tried installing other roms and it keeps giving me this. Im using the latest twrp