QStringarg Argument missing qn 153

This error message is indicating that there is a missing argument in a call to the QString::arg() function. The function is expecting a value to replace the "%q\n" placeholder in the string, but it is not being provided.

In this particular case, the error message is indicating that the missing argument should be the value 153. To fix the error, you would need to provide this value as an argument to the QString::arg() function, like so:

QString str = "The value is %q\n"; str = str.arg(153);

This would replace the "%q\n" placeholder in the string with the value 153, producing the following output:

"The value is 153\n