Change login call from query to mutation.

frontend/src/graphql/mutations.js

@@ -136,3 +136,21 @@ export const createContributionMessage = gql`
     }
   }
 `
+
+export const login = gql`
+  mutation($email: String!, $password: String!, $publisherId: Int) {
+    login(email: $email, password: $password, publisherId: $publisherId) {
+      email
+      firstName
+      lastName
+      language
+      klickTipp {
+        newsletterState
+      }
+      hasElopage
+      publisherId
+      isAdmin
+      creation
+    }
+  }
+`

frontend/src/graphql/queries.js

@@ -1,23 +1,5 @@
 import gql from 'graphql-tag'
 
-export const login = gql`
-  query($email: String!, $password: String!, $publisherId: Int) {
-    login(email: $email, password: $password, publisherId: $publisherId) {
-      email
-      firstName
-      lastName
-      language
-      klickTipp {
-        newsletterState
-      }
-      hasElopage
-      publisherId
-      isAdmin
-      creation
-    }
-  }
-`
-
 export const verifyLogin = gql`
   query {
     verifyLogin {

frontend/src/pages/Login.vue

@@ -43,7 +43,7 @@
 import InputPassword from '@/components/Inputs/InputPassword'
 import InputEmail from '@/components/Inputs/InputEmail'
 import Message from '@/components/Message/Message'
-import { login } from '@/graphql/queries'
+import { login } from '@/graphql/mutations'
 
 export default {
   name: 'Login',
@@ -71,14 +71,13 @@ export default {
         container: this.$refs.submitButton,
       })
       this.$apollo
-        .query({
-          query: login,
+        .mutate({
+          mutation: login,
           variables: {
             email: this.form.email,
             password: this.form.password,
             publisherId: this.$store.state.publisherId,
           },
-          fetchPolicy: 'network-only',
         })
         .then(async (result) => {
           const {