After installing the latest version of SPP, I am getting this error. Call to undefined function str_starts_with()

I am running the latest Joomla 3.x (not 4).

My website www.clickgrafix.com is now not accessible.

Thank you

P.s, I did apply this fix in this link https://www.joomshaper.com/forum/question/19433

and it worked. However, I hope it can be fixed without having to edit this file.