Invalid content type

[dwxw]

Environment

RN 0.77.3

Description

First time using Rock, migrated automatically. App is running in simulator and appear to be fine. However the metro bundler logs the following error several times as you use the app.

Error: Invalid content type, expected application/json
    at <snip>/node_modules/@rock-js/plugin-metro/node_modules/metro/src/lib/parseJsonBody.js:11:16
    at new Promise (<anonymous>)
    at parseJsonBody (<snip>/node_modules/@rock-js/plugin-metro/node_modules/metro/src/lib/parseJsonBody.js:7:10)
    at Server._symbolicate (<snip>/node_modules/@rock-js/plugin-metro/node_modules/metro/src/Server.js:1030:28)
    at Server._processRequest (<snip>/node_modules/@rock-js/plugin-metro/node_modules/metro/src/Server.js:460:18)
    at processRequest (<snip>/node_modules/@rock-js/plugin-metro/node_modules/metro/src/Server.js:394:10)
    at <snip>/node_modules/@sentry/react-native/dist/js/tools/metroMiddleware.js:93:16
    at call (<snip>/node_modules/connect/index.js:239:7)
    at Immediate.next (<snip>/node_modules/connect/index.js:183:5)
    at process.processImmediate (node:internal/timers:493:21)

Any ideas, maybe something is not configured correctly?

[thymikee]

You'll need to help me investigate this. The error is coming from Sentry. Can you put some logs here and there in node_modules (around the lines listed) and try to trace what causes the the invalid content type?

[thymikee]

As much as we try to stay compatible with previous versions of React Native, the Metro plugin is dependent on the latest Metro tied to RN 0.81 – it's currently metro@0.83. Your React Native project will load a different version, and Sentry likely does another one. This may, but doesn't have to, be a source of problem too.

[thymikee]

I was able to reproduce it with 0.77 project, will try to work on some compat layer for that if possible