在React App中重定向时出现白色空白页

Question

我有一个我从create-react-app创建的react应用。在src文件中，我还有一个名为setupProxy.js proxy的文件。里面我有以下代码：

module.exports = function(app) {
  app.get('/auth/login' , (req,res,next) => {
     req.redirect('/page1')
};



<form action="/auth/Login" method="post"  autoComplete="off">
                    <div className="UsernameInput">
                    <TextField
                        id="username"
                        label="Username"
                        className={classes.textField}
                        variant="outlined"
                        required={true}
                        InputLabelProps={{
                            classes: {
                              root: classes.cssLabel,
                              focused: classes.cssFocused,
                            },
                          }}
                          InputProps={{
                            classes: {
                              root: classes.cssOutlinedInput,
                              focused: classes.cssFocused,
                              notchedOutline: classes.notchedOutline,
                            }
                          }}
                    />
                    </div>
                    <div className="PasswordInput">
                    <TextField
                            required={true}
                            id="password"
                            className={classes.textField}
                            variant="outlined"
                            type={showPassword ? 'text' : 'password'}
                            label="Password"
                            InputLabelProps={{
                                classes: {
                                  root: classes.cssLabel,
                                  focused: classes.cssFocused,
                                },
                              }}
                            InputProps={{
                                classes: {
                                    root: classes.cssOutlinedInput,
                                    focused: classes.cssFocused,
                                    notchedOutline: classes.notchedOutline,
                                  },
                            endAdornment: (
                                <InputAdornment position="end">
                                <IconButton
                                    edge="end"
                                    aria-label="Toggle password visibility"
                                    onClick={handleClickShowPassword}
                                >
                                    {showPassword ? <VisibilityOff /> : <Visibility />}
                                </IconButton>
                                </InputAdornment>
                            ),
                            }}
                    />
                    </div>

执行重定向时，它成功地更改了页面，但是当它执行时，它首先显示了空白的白色页面，然后加载了该页面。

为什么这样做？