Fixes https://gitlab.hzdr.de/hub-terra/sms/frontend/-/issues/308

store/contacts.ts

@@ -41,10 +41,13 @@ interface contactsState{
   configurationContacts: Contact[]
 }
 
-export const state = {
-  allContacts: [],
-  configurationContacts: []
+export const state = () => {
+  return {
+    allContacts: [],
+    configurationContacts: []
+  }
 }
+
 export const getters = {
   searchContacts: (state: contactsState) => {
     return state.allContacts.filter((c: Contact) => !state.configurationContacts.find((rc: Contact) => rc.id === c.id))