Unable to inject Capacitor, Plugins won't work

[mrodal]

Description of the problem:
Hey, I just got started with capacitor, and Im getting this error on the Android studio console when running the app:
E/Capacitor: Unable to inject Capacitor, Plugins won't work

Is it normal?

Affected platform

• Android
• iOS
• electron
• web

OS of the development machine

• Windows
• macOS
• linux

Other information:

Capacitor version:
4.12

node version:
10.15

npm version:
6.9

CocoaPods version:

Steps to reproduce:

Link to sample project:

[jcesarmobile]

Can you provide a little more information? like what steps did you follow

A sample app would be helpful

[mrodal]

Of course, its a vue app, so the type in ionic config is custom.
I created the app with vue-cli
I installed ionic as described here https://github.com/ionic-team/ionic/tree/master/vue
Executed ionic init
Then ionic capacitor add android
Added "ionic:serve": "vue-cli-service serve", to the package.json scripts
Executed ionic capacitor run android --livereload
Then ran the app on an emulator on android studio

Heres the app:
https://github.com/mrodal/reported-issues/tree/unable-inject-capacitor

[mrodal]

Ok, I looked for the code raising the error, and its on JSInjector.java:

This is called first with the site's html, where the script is injected succesfully, and then again a couple of times with content like this:
{"websocket":true,"origins":["*:*"],"cookie_needed":false,"entropy":1469886054}

So it is actually working, but it is trying to also inject the scripts where it shouldnt

[jcesarmobile]

Yeah, Capacitor injects itself into html files searching for the head tag, but it's trying to inject itself into json files too showing that error message. Will fix it.

[mrodal]

If you think its a good solution, I can make a PR checking for the content type on WebViewLocalServer.java:

[jcesarmobile]

Thanks, but I've already sent it.

[theunreal]

I am facing this issue, what is the workaround?

[jcesarmobile]

Should be a harmless message as it happens when it tries to inject itself to json or other type of files. Unless you plugins don't work, in that case create a new issue and provide more information.

[theunreal]

Thanks @jcesarmobile , I opened a new issue.

#1595