Experince is a teacher,.
I was shocked myself. I was about installing a plugin when i got that message. I had to go change the settings i did on my host. But still it dinnt work out so i had to google it and found this threaded post. and decided to change myphp version which was the solution of the problem.
the issue now is that it only worked in version 7.1 and wont work in any other php version either lower or higher.
does it mean my hosting have not updated the earlier versions of php?