Valid request get proper response
fetch('http://128.199.223.234/api/oauth/access_token?grant_type=password&client_id=WorldKoins&client_secret=qCx3whT4t8ufR8B8CVYC7OU1qyA5Q0VP4GXKayN8&username=admin@email.com&password=123456',{method: 'POST'}).then(function(response) { console.log(response) }).catch(function(err) { console.log(err)});

Response for valid request
body: (...)
bodyUsed: false
headers: Headers
ok: true
status: 200
statusText: "OK"
type: "cors"
url: "http://128.199.223.234/api/oauth/access_token?grant_type=password&client_id=WorldKoins&client_secret=qCx3whT4t8ufR8B8CVYC7OU1qyA5Q0VP4GXKayN8&username=admin@email.com&password=123456"


Invalid request get proper response
fetch('http://128.199.223.234/api/oauth/access_token?grant_type=password&client_id=WorldKoins&client_secret=qCx3whT4t8ufR8B8CVYC7OU1qyA5Q0VP4GXKayN8&username=admin@email.com&password=12345s6',{method: 'POST'}).then(function(response) { console.log(response) }).catch(function(err) { console.log(err)});

Response for invalid request
body: (...)
bodyUsed: false
headers: Headers
ok: false
status: 500
statusText: "InvalidCredentialsException:The user credentials were incorrect."
type: "cors"
url: "http://128.199.223.234/api/oauth/access_token?grant_type=password&client_id=WorldKoins&client_secret=qCx3whT4t8ufR8B8CVYC7OU1qyA5Q0VP4GXKayN8&username=admin@email.com&password=12345s6"