localhost:19000 not working

{"name":"android-test","slug":"android-test","version":"1.0.0","orientation":"portrait","icon":"./assets/icon.png","userInterfaceStyle":"light","splash":{"image":"./assets/splash.png","resizeMode":"contain","backgroundColor":"#ffffff","imageUrl":"http://127.0.0.1:19000/assets/./assets/splash.png"},"updates":{"fallbackToCacheTimeout":0},"assetBundlePatterns":["**/*"],"ios":{"supportsTablet":true},"android":{"adaptiveIcon":{"foregroundImage":"./assets/adaptive-icon.png","backgroundColor":"#FFFFFF","foregroundImageUrl":"http://127.0.0.1:19000/assets/./assets/adaptive-icon.png"}},"web":{"favicon":"./assets/favicon.png"},"_internal":{"isDebug":false,"projectRoot":"F:\\android-test","dynamicConfigPath":null,"staticConfigPath":"F:\\android-test\\app.json","packageJsonPath":"F:\\android-test\\package.json"},"sdkVersion":"47.0.0","platforms":["ios","android"],"iconUrl":"http://127.0.0.1:19000/assets/./assets/icon.png","debuggerHost":"127.0.0.1:19000","logUrl":"http://127.0.0.1:19000/logs","developer":{"tool":"expo-cli","projectRoot":"F:\\android-test"},"packagerOpts":{"dev":true},"mainModuleName":"node_modules\\expo\\AppEntry","__flipperHack":"React Native packager is running","hostUri":"127.0.0.1:19000","bundleUrl":"http://127.0.0.1:19000/node_modules%5Cexpo%5CAppEntry.bundle?platform=ios&dev=true&hot=false","id":"@anonymous/android-test-da8b1d9f-7744-4711-98bb-0ad645c58f30"}