Ionic Error while linking PHP/MySQL

ionic-v1
1

I am getting this error while I am trying to link PHP/MySQL.

how do I fix it ??

Error: Uncaught (in promise): Error: StaticInjectorError[Http]:
StaticInjectorError[Http]:
NullInjectorError: No provider for Http!
Error: StaticInjectorError[Http]:
StaticInjectorError[Http]:
NullInjectorError: No provider for Http!