Error: undefined Unexpected end of JSON input

Hi, I’m trying to setup this plugin and I’ve followed a couple of solutions on this forum to fix the errors I encountered only to be stonewalled with this “Error: undefined Unexpected end of JSON input” is there a possible setting on my Cloudflare that’s causing the issue? Because I got this error after setting up a separate page rule for Edge Cache TTL: ≥2 hours. Thanks in advance for the help.