Here are a few options for your post, depending on where you're sharing it.
before starting the flash process. In SP Flash Tool, ensure the Connection with the correct COM port from the bypass tool. Hardware Verification: sp flash tool error status ext ram exception link
The most frequent cause of this error is flashing a ROM meant for a different variant of your device. MediaTek devices often look identical on the outside but feature different RAM or storage chips inside. Here are a few options for your post,
Uninstall existing MediaTek USB VCOM drivers from your computer via the Device Manager. Restart your PC. sp flash tool error status ext ram exception link
Using the wrong firmware is the leading cause of this exception. MediaTek devices often have multiple hardware revisions under the exact same marketing name.