(node:26404) UnhandledPromiseRejectionWarning: Error: EPERM: operation not permitted

[Manikanta-20]

Bug report

Same issue i have raised in next.js discussion ,no one provided the solution,right now ,i got same error for different page

ERROR
(node:26404) UnhandledPromiseRejectionWarning: Error: EPERM: operation not permitted, lstat 'D:\example .next\static\development\pages\login.js'
at realpathSync (fs.js:1615:7)
at deleteCache (D:\example \node_modules\next\dist\build\webpack\plugins\nextjs-require-cache-hot-reloader.js:1:177)
at D:\example \node_modules\next\dist\build\webpack\plugins\nextjs-require-cache-hot-reloader.js:2:355
at _next0 (eval at create (D:\example \node_modules\tapable\lib\HookCodeFactory.js:33:10), :19:1)
at eval (eval at create (D:\example \node_modules\tapable\lib\HookCodeFactory.js:33:10), :32:1)
at D:\example \node_modules\next\dist\build\webpack\plugins\unlink-removed-pages-plugin.js:2:530

when this issue comes Next.js o/p logger will :
event - build page: /login
event - build page: /login
event - build page: /login
....

it is not build page it will struct there?

some time ,this issue will come for normal page also?

What is the solution?

[paambaati]

@sai1139 Can you follow the issue template (the text you initially see when you open a new issue) and provide more code that we can run and see this issue ourselves? If we can’t reproduce this issue, it will be very difficult to help you.

[Manikanta-20]

@sai1139 Can you follow the issue template (the text you initially see when you open a new issue) and provide more code that we can run and see this issue ourselves? If we can’t reproduce this issue, it will be very difficult to help you.

@paambaati Please check it

`import React from 'react';
import {
TextField,
Box,
Typography,
InputAdornment,
IconButton,
Link,
Button,
FormControl,
RadioGroup,
FormControlLabel,
Radio,
} from '@material-ui/core';
import { makeStyles } from '@material-ui/core/styles';
import Visibility from '@material-ui/icons/Visibility';
import VisibilityOff from '@material-ui/icons/VisibilityOff';
import Router from 'next/router';
import { loginRouter } from '../../lib/login-service';
import { sendEmail } from '../../lib/forgot-reset-password';
import useSnackBars from '../../components/toast/toast';
import { LoginFooter } from '../../components/main-footer';
import { useLoader } from '../../components/loader/load';
import ForgotUserid from './forgot-user-id';
import ForgotPasswordUi from './forgot-password';

const useStyles = makeStyles((_theme) => ({
root: {
display: 'flex',
flexDirection: 'column',
alignItems: 'center',
},
label: {
background: '#f5f5f5',
textAlign: 'center',
width: '100%',
margin: '0px',
borderBottom: '1px solid #ccc',
padding: '8px 0px 8px 0px',
fontWeight: 'bold',
},
textField: {
width: '300px',
marginTop: '20px',
},
link: {
cursor: 'pointer',
margin: _theme.spacing(2),
},
smalllabel: {
textAlign: 'center',
width: '100%',
margin: '0px',
fontSize: '14px',
padding: '8px 0px 8px 0px',
},
buttons: {
marginLeft: '35px',
},
modalButton: {
marginTop: '20px',
},
}));
export const Login = () => {
const classes = useStyles();
const [values, setValues] = React.useState({ showPassword: false });
const [username, setUsername] = React.useState('');
const [password, setPassword] = React.useState('');
const handleClickShowPassword = () => {
setValues({ ...values, showPassword: !values.showPassword });
};
const handleMouseDownPassword = (event) => {
event.preventDefault();
};
const changeusername = (event) => {
event.preventDefault();
setUsername(event.target.value);
};
const changePassword = (event) => {
event.preventDefault();
setPassword(event.target.value);
};
const active = React.useMemo(() => {
if (username.trim() === '' || password.trim() === '') return false;
return true;
}, [password, username]);
const handleSubmit = async (event) => {
event.preventDefault();
try {
const response = {username, password, value};
console.log(response);
} catch (ex) {
console.log(ex);
}
};

const onReset = (event) => {
event.preventDefault();
setPassword('');
setUsername('');
};

return (
<>


Login

<form noValidate className={classes.root} onSubmit={(event) => handleSubmit(event)}>

<TextField
className={classes.textField}
id="password"
type={values.showPassword ? 'text' : 'password'}
variant="outlined"
label="Password"
size="small"
value={password}
onChange={changePassword}
InputProps={{
endAdornment: (


{values.showPassword ? : }


),
}}
/>




LOGIN


RESET




</>
);
};
`

[paambaati]

Okay. Now, try to answer all these questions, one by one.

1. When does this error occur? Every time you run, or when you do something specifically?
2. EPERM generally means a permission error. How were the dependencies installed? Do you have write permissions to the D:\examples directory?

[Manikanta-20]

Okay. Now, try to answer all these questions, one by one.

1. When does this error occur? Every time you run, or when you do something specifically?
2. EPERM generally means a permission error. How were the dependencies installed? Do you have write permissions to the D:\examples directory?

1. i don't know,on what based this error will come. every time i'll run same
   2)Mine OS is windows have all permission .

Some times , i have faced for some page which contains only view

[paambaati]

I’m sorry, but there isn’t enough information to help you here. Your best bet will be to either a) set up a repo where we can reproduce the issue ourselves or b) find others with the same issue and see if they’ve been able to find a solution.

[Manikanta-20]

ok,but problem is to reproduce this error.

[Manikanta-20]

@timneutkens what is the solution?

This issue is coming from custom server?

[saqibameen]

@Manikanta-20 @paambaati I am facing the same issue in next.js development. It occurs randomly and stops compiling for further changes. Any solution?

[Manikanta-20]

@saqibameen
Your issue is reproducible?

until now there is no solution.. to reproduce the error is challenging because it occurs randomly.

Thanks

[saqibameen]

@Manikanta-20 Yeah, it happens randomly. There is no "exact" way to reproduce. :(

Wastes tons of time as I have to start again every time it happens.