sudo ./get_folder.sh no such file or directory

I'm following an instruction guide in order to install programs on ubuntu 20.04 LTS WSL.However, the error occurs when asked to write the line "sudo ./get_folder.sh"

/usr/local/bin/test$ sudo ./get_folder.shgrep: ./get_folder.sh: No such file or directory./get_folder.sh: line 13: /usr/local/bin/linux_bin/get_folder.sh.runme: Success

Im in the directory "/usr/local/bin/test$" which contains the script get_folder.sh

What should happen, according to the guide, is that the files from downloaded folder get placed in /usr/local/bin/.

why cant I run the script?

Additional info that could help:my bashrc is

export PATH=/usr/local/bin:$PATHexport KMP_STACKSIZE=8mexport DISPLAY=:0

The webpage from the script is from contains this text:

"As root, the script copies the programs into /usr/local/bin/linux_bin, and links them to /usr/local/bin. As a normal user, they are downloaded to $HOME/bin/linux_bin, and linked to your $HOME/bin. In the latter case, make sure that $HOME/bin is in your $PATH."