Occurred Error as [Process] kill() returned unexpected error 1

When you using a WKWebview, this error will be shown repeatedly.

2020–04–16 23:04:04.451051+0900 test[3355:651707] [Process] kill() returned unexpected error 1
2020–04–16 23:04:04.451256+0900 test[3355:651707] [Process] kill() returned unexpected error 1

Dropout from Physics, self-taught and worked on the IT industry as a Dev/Design/Planning for 8 years. And I had run my Startup for 3 years. I fancy a ☔️ 🇬🇧