Mac randomly booting into missing hard drive screen.

Hi, I am not sure why, but my Mac boots into the missing folder screen about ever 5 times I try and boot it up. This is becoming a problem. If you look at my previous post on r/Mac about this issue, you will see how random it is. The other thing to say is that I replaced my SSD on this 2017 MBP without the Touch Bar. The problem might be because of this replacement but I am not sure. Should I delete oclp altogether, or do you suspect that this is a problem with my SSD?

Thanks, any help will be appreciated!