How can i fix this

[snowlord070]

Failed to listen on 127.0.0.1:80 (reason: Address already in use) how can i fixed this please help

[wallcrosstype]

basically your port 80 already in used by some other process either serve on other port or find out culprit

see also https://stackoverflow.com/questions/27900174/artisan-error-failed-to-listen-on-localhost8000