cannot initialize 2 variables with 1 values

What’s wrong with this

m, err := os.Truncate(path,0)
    if err != nil {
        log.Printf("Failed to truncate: %v", err)
    }

if I do above I am getting an error like this

cannot initialize 2 variables with 1 values

MEDevel.com: Open-source for Healthcare and Education

Collecting and validating open-source software for healthcare, education, enterprise, development, medical imaging, medical records, and digital pathology.

Visit Medevel

while this works without an issue

if err := os.Truncate(path, 0); err != nil {
        log.Printf("Failed to truncate: %v", err)
    }

>Solution :

function os.Truncate will just affect the file in the path. Only return error, nothing else.