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.

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