[[: not found

"protoc-gen-go: program not found or is not executable"

protoc-gen-go: program not found or is not executable

Not Found The requested URL was not found on this server. Apache/2.4.41 (Ubuntu) Server at localhost Port 80

java error main class could not be found

webpack Module not found: Error: Can't resolve '../

module not found: can't resolve 'react-dom'

c# namespace name form1 could not be found

C# PrincipalContext The network path was not found

bash: apt-add-repository: command not found

failed to start ssh.service: unit ssh.service not found.