How to disable error message on Linux printing on the console

 First, open up your terminal and check your current log level:
                    "sysctl kernel.printk"        

                        3    4    1    7

To change the log level type this command for temporary

        "dmesg -n 1"      not that, you have to use the root account

      To make it permanently
        "sudo nano /etc/sysctl.conf"
       change the value of "kernel.printk =  3  4  1  7"   to  "kernel.printk = 1 2 1 2"

for Ubuntu also in folder /etc/sysctl.d/ you have to edit 10-console-messages.conf  file to:
                                                                                                            "kernel.printk = 1 2 1 2"

(Optional)
You can also disable log service "sudo systemctl disable rsyslog" 

for more references head over to visit these link below:

https://askubuntu.com/questions/147555/over-current-condition-on-port-7-or-8

https://stackoverflow.com/questions/17358499/linux-how-to-disable-all-log/32553762

https://unix.stackexchange.com/questions/13019/description-of-kernel-printk-values

https://elinux.org/Debugging_by_printing

https://www.rsyslog.com/writing-specific-messages-to-a-file-and-discarding-them/