Candle Grbl only says port opened

I have a problem with my Candle CNC host. I run it as root, and it only says Port opened.

It seems that it doesn't have any other way. I chose the correct USB port, baud rate, and others.

Here is my neofetch output:

OS: Ubuntu 20.10 x86_64
Host: Swift SF114-32 V1.12
Kernel: 5.8.0-26-generic
Uptime: 3 days, 15 hours, 2 mins
Packages: 2764 (dpkg), 16 (snap)
Shell: bash 5.0.17
Resolution: 1920x1080
DE: GNOME
WM: Mutter
WM Theme: Adwaita
Theme: Layan-dark [GTK2/3]
Icons: Tela-blue-dark [GTK2/3]
Terminal: gnome-terminal
CPU: Intel Pentium Silver N5000 (4)
GPU: Intel UHD Graphics 605
Memory: 2808MiB / 3735MiB 

The solution is that I changed the baud rate.

Know someone who can answer? Share a link to this question via email, Twitter, or Facebook.