Cannot serve ionic v1

It was working perfectly but don’t know what happend it’s not serving now.
It is asking tsconfig.json file, but his project is ionic v1. Why it ask so?

Maybe it doesn’t detected that its an ionic 1 project.
Can’t you just open the index.html with your browser of choice? as long as I’m concerned there is nothing to compile in ionic 1

What is your ionic info output?

cli packages: (/home/santosh/Documents/projects/ionic/mutumbu_app/node_modules)

@ionic/cli-utils  : 1.19.0
ionic (Ionic CLI) : 3.19.0

global packages:

cordova (Cordova CLI) : 7.1.0 
Gulp CLI              : CLI version 3.9.1 Local version 3.9.1

local packages:

@ionic/app-scripts : 3.1.2
Cordova Platforms  : android 6.4.0 ios 4.5.4
Ionic Framework    : ionic-angular 3.9.2


Node : v6.12.0
npm  : 4.1.2 
OS   : Linux 4.10

Environment Variables:

ANDROID_HOME : not set


backend : pro

You somehow installed this version into your project or at least package.json file.

@Sujan12 what is the solution then

No idea, you have to know what you did. As long as there is a ionic-angular present, the CLI will recognize your project as a Ionic 2+ one.