This usually indicates a corrupted DMG file or bad sectors on the USB flash drive.
How to Install macOS Mojave/High Serria from USB on Mac - UUByte uubyte dmg editor full extra quality
Plug your USB drive into a fast USB port (preferably USB 3.0 or higher, marked in blue). UUByte will automatically detect the drive and display it in the drop-down menu. Double-check to ensure you have selected the correct drive letter to avoid accidental data loss on other external devices. Step 4: Start the Flashing Process This usually indicates a corrupted DMG file or