TypeError: _vm.login is not a function

This error message is typically encountered in a Vue.js application when there is an attempt to call a function that is not defined or not available in the current component. In this case, it seems that the component is attempting to call a function named `login` on its instance, but this function is not defined in the component's methods or computed properties.

To resolve this issue, you need to ensure that the `login` function is defined and accessible within the component's scope. This can be done by adding the function to the component's methods object, like so:

<template>
  <div>
    <!-- login form and other content -->
  </div>
</template>

<script>
export default {
  name: 'LoginComponent',
  methods: {
    login() {
      // handle login logic here
    }
  }
}
</script>

Then, you can call the `login` function from within the component's template or other methods, like so:

<template>
  <div>
    <form @submit.prevent="login">
      <!-- login form fields -->
      <button type="submit">Login</button>
    </form>
  </div>
</template>

<script>
export default {
  name: 'LoginComponent',
  methods: {
    login() {
      // handle login logic here
    }
  }
}
</script>

Make sure to double-check that the function name is spelled correctly and that it is being called with the correct syntax. If the function is still not being recognized, you may need to check that the component is properly imported and registered in your application.