Wiped system, can get into recovery but a 'Failed' message appears after flashing ROM

I wanted to "fully" format my Elephone Vowney. I went into recovery and deleted everything, including system and internal storage. The result? I have no OS anymore...

I have the stock ROM on my Micro SD card, I can get into recovery, but every time I try to flash the ROM I get a 'Failed' message... Even after transferring the ROM to my internal storage (it appears as the only item there), I get the same 'Failed' message...

Can anyone help, please?

Welcome to the forums. I would try a new download of the ROM onto the SD card, and try flashing again.