Thank you Ken!
The PHP was the real problem, my webserver updated it and I’ve just activated learnpress successfully !
I tried it on two subdomains I have wordpress installed on and I’m getting the same issue on both, although one of them is almost bare. So I’m thinking it might have to do with my webserver ?
I installed wordpress health check and it recommended I upgrade my PHP and mySQl to newer version.. my webserver will upgrate it tomorrow, hopefully that will solve it.