Resolving error raised by navigation guard: "Error while redirecting from '/' to '/dashboard'"

Question

When I log in with user it redirects me to the dashboard as expected. As soon as I log out and try to log in again (even with another user and without refreshing the page) it returns this error in the console:

I only want to redirect the user in the dashboard if authenticated, even if the page doesn't refresh, because I did notice that if I refresh the page, I can log in with no issues.

Please help me if you can. Here is some code:

Login Method

methods: {
    ...mapActions({
    attempt: "auth/attempt",
    }),

    submit(credentials) {
      axios
        .post("http://127.0.0.1:8000/api/login", credentials)
        .then((res) => {
          // console.log(res.data);
          if (res.data.success) {
            
            this.attempt(res.data.token)
          }

          if (res.data.errors) {
            this.loginErrors = res.data.errors;
          } else {
            this.$router.push({ name: 'dashboard' })
          }

          
        })
        .catch((err) => {
          if (
            err.name !== "NavigationDuplicated" &&
            !err.message.includes(
              "Avoided redundant navigation to current location"
            )
          ) {
            
            console.log(err);
          }
        });
    },
  },

Dashboard path in router

{
            path: '/dashboard',
            name: 'dashboard',
            component: DashboardComponent,
            beforeEnter: (to, from, next) => {
                if (!store.getters['auth/authenticated']) {
                    return next({
                        name: 'home'
                    })
                }
                next()
            }
        },

Attempt to perform operations in vuex storage

async attempt({ commit, state }, token) {
            if (token) {
                commit('SET_TOKEN', token)
            }

            // se non c'è
            if(!state.token) {
                return
            }
            
            try {
                await axios.get('http://127.0.0.1:8000/api/user')
                    .then(res => {
                        commit('SET_USER', res.data)
                    })
            } catch (e) {
                commit('SET_TOKEN', null)
                commit('SET_USER', null)
            }
        },

Others from vuex

namespaced: true,
    state: {
        token: null,
        form: null,
    },

    getters: {
        authenticated(state) {
            return state.token && state.form
        },

        user(state) {
            return state.form
        },
    },

    mutations: {
        SET_TOKEN(state, token) {
            state.token = token
        },

        SET_USER(state, data) {
            state.form = data
        },

    },

Answer 1

Update: Should wait for a call to attempt(), otherwise this.$router.push({ name: 'dashboard' }) (so /dashboard The guard function on the route) will be called before the call to the /api/user API completes:

    submit(credentials) {
      axios
        .post("http://127.0.0.1:8000/api/login", credentials)
        .then(async (res) => {
          // console.log(res.data);
          if (res.data.success) {
            await this.attempt(res.data.token)
          }

          if (res.data.errors) {
            this.loginErrors = res.data.errors;
          } else {
            this.$router.push({ name: 'dashboard' })
          }
        })
        .catch((err) => {
          if (
            err.name !== "NavigationDuplicated" &&
            !err.message.includes(
              "Avoided redundant navigation to current location"
            )
          ) {
            
            console.log(err);
          }
        });
    },

---

next is a function that should be called exactly once ( does not return).
Try changing the code in your router to:

        {
            path: '/dashboard',
            name: 'dashboard',
            component: DashboardComponent,
            beforeEnter: (to, from, next) => {
                if (!store.getters['auth/authenticated']) {
                    next({ name: 'home' })
                } else {
                    next()
                }
            }
        },