My site name is ( Yes I need some clarify about create json file via netlify site example when i submit a form based on form is create file via next js api call same as edit delete option

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ERROR Error creating JSON file: [Error: EROFS: read-only file system, open

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Hi welcome to the forums. Can you please edit your post and title to clarify what you are asking?

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I am update the link kindly check

I am attached the screenshot .I am explaning the code work flow when I enter the file name in input box enter based on input value (api/?path="input value ") in next js api backend fs.writefilesync(input value,default data) It’s working as well as in local host

HI, I see that your site is timing out as one of the issue in your screenshot. I can bump your function timeout which may help your function work, but you need to be on a pro plan or higher, right now you are on the starter tier - this is a requirement that applies to everyone who wants a bigger timeout. You can upgrade to Pro easily through the Netlify UI dashboard.

If you let us know when you have upgraded, we can change the settings for you!