Question 33021 in React native Question posted in
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whenever I try to run my project I keep getting the development server returned http response code 500 for url in react native –SOLVED

this problem occurred after deploying sanity to my project(I don’t know if it’s the source of the problem but just wanted to share it.)
[This is what I see in the emulator] (https://i.stack.imgur.com/otbGz.png)
and the following is what appears in the terminal:

Error: Duplicated files or mocks. Please check the console for more info
    at setModule (/home/faisalmwy/development/react-native/food-delivery/node_modules/metro-file-map/src/index.js:553:17)
    at workerReply (/home/faisalmwy/development/react-native/food-delivery/node_modules/metro-file-map/src/index.js:624:9)
    at processTicksAndRejections (node:internal/process/task_queues:95:5)
    at async Promise.all (index 27260)
    at /home/faisalmwy/development/react-native/food-delivery/node_modules/metro-file-map/src/index.js:395:22
    at DependencyGraph.ready (/home/faisalmwy/development/react-native/food-delivery/node_modules/metro/src/node-haste/DependencyGraph.js:94:5)
    at Bundler.ready (/home/faisalmwy/development/react-native/food-delivery/node_modules/metro/src/Bundler.js:75:5)
    at IncrementalBundler.ready (/home/faisalmwy/development/react-native/food-delivery/node_modules/metro/src/IncrementalBundler.js:327:5)
    at Server.ready (/home/faisalmwy/development/react-native/food-delivery/node_modules/metro/src/Server.js:1247:5)

I’ve searched for this problem before, some said to delete the package-lock.json and node_modules, but it didn’t work. others said to reinstall npm altogether. that didn’t work also. I also tried running the app on a different local host than usual, since sometimes I and a friend of mine connect at the same time.

I’ve solved the problem, I typed the answer in the answers section

Thanks for helping ❤.

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2

Answers


  1. Chosen as BEST ANSWER
    0

    PROBLEM: the problem was having two package-lock.json files. since my project has the sanity file which contains package-lock.json as well.

    SOLUTION: I've solved the problem By changing from npm to yarn, I tried to convert the project from npm to yarn, but that didn't work. So I had to create a new yarn project then I transferred all the files I needed from the old project, then added the packages using yarn.

    I imagine this problem wouldn't happen only with sanity, but with any case where there are two package-lock.json files.


  2. 0

    Have you tried to stop the application and do the below process:

    • cd android and gradlew clean
    • remove node_modules and package-lock.json
    • run npm i
    • also remove application from simulator or from your device
    • rerun application
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