<script lang="ts">
// ...
import { AxiosError } from "axios";
// ...

const response = await this.$http
	.post<JwtToken>(
		"authentication_token",
		{
			email: this.username,
			password: this.password
		},
		{
			headers: {
				authorization: ""
			}
		}
	)
	.catch((error: AxiosError) => { // <-- this line right here
		if (error?.response?.status == 401) {
			throw "Login Failed";
		}

		throw error?.message;
	});
// ...