NavParams references deleted but still causing errors after migrating to Ionic 4

Ionic Framework
1

Hello!

I’m getting the following error after migrating my code to Ionic 5 with Router. I was using NavParams to pass parameters between the different pages of the app but now I’m using Router and the Storage class. Here’s the error:

NullInjectorError: No provider for NavParams!

I don’t understand why this error appears because there is nothing about NavParams in my .ts files. If I include NavParams in the provider list on app.module.ts, I get a different error:

Error: Can't resolve all parameters for NavParams

The app is generated and deployed on the device I use, but only a blank screen is displayed.
Any clues about what’s going on and how to solve it? My Ionic version is 5.4.4.
Thanks in advance!

2

My friend, in your code has NavParams declared! Check the code! Use FIND in your IDE!

:crazy_face:

3

Incidentally, Storage is a bad tool for in-app communication. Use a mutually injected service provider instead.

4

@starlley I found the references in the node_modules and www directories. I deleted and regenerated them and the problems are solved. Thanks!
@rapropos Good point, thank you!

I’m still migrating the app to Ionic 4 and now I’m stuck with CORS issues (using Angular HttpClient). I changed the headers sent by the server as pointed by WebView 3.x but on an iOS device ionic://localhost doesn’t work and gives the origin not allowed error anyway… I guess I’m missing something, but I don’t know exactly what.