external hard drive "disk not ejected properly" - it ejects randomly when I'm in the middle of using it
I don't know what's going on, and thought maybe someone here can help me.
I have an external hard drive that I use every day for work stuff.
I have a MacBook Pro (Retina, 15-inch, Late 2013).
I'm running Mojave on it, version 10.14.6, build 18G103.
Up until a couple of days ago, my portable hard drive worked fine. But then it started randomly ejecting and remounting all by itself over and over again. Sometimes I can work for 10 seconds before it randomly ejects itself, other times I can get 5 minutes of work done. Either way, it's not acceptable because it's hard to get anything done when you keep getting kicked off whatever file you're working with (because it's on the portable hard drive).
Energy saver settings are as follows, and do NOT appear to solve the problem:
>>I activated the following 2 options under Power Adapter>>
"Prevent computer from sleeping automatically when the display is off"
"Wake for Wi-Fi network access"
>>I activated the following 1 option under Battery>>
"Slightly dim the display while on battery power"
I tried using the app Amphetamine to prevent my laptop from sleeping if this hard drive is connected. This didn't help.
So I don't know what to do. This is making my workflow impossible. There are no new apps other than me trying Amphetamine.