Fix fetching MRF data in case it's undefined

src/store/modules/users.js

@@ -223,9 +223,12 @@ const users = {
     },
     async FetchTagPolicySetting({ commit, getters }) {
       const { data } = await fetchSettings(getters.authHost, getters.token)
-      const mrfPolicies = data.configs
-        .find(el => el.key === ':mrf').value
-        .find(el => el.tuple[0] === ':policies').tuple[1] || []
+      const mrfSettings = data.configs.find(el => el.key === ':mrf')
+        ? data.configs.find(el => el.key === ':mrf').value
+        : []
+      const mrfPolicies = mrfSettings.find(el => el.tuple[0] === ':policies')
+        ? mrfSettings.find(el => el.tuple[0] === ':policies').tuple[1]
+        : []
 
       commit('SET_TAG_POLICY', Array.isArray(mrfPolicies) ? mrfPolicies : [mrfPolicies])
     },

src/views/settings/components/MRF.vue

@@ -69,7 +69,7 @@ export default {
       })
     },
     showMrfPolicy(key) {
-      const selectedMrfPolicies = _.get(this.settings.settings, [':pleroma', ':mrf', ':policies'])
+      const selectedMrfPolicies = _.get(this.settings.settings, [':pleroma', ':mrf', ':policies']) || []
       const mappedPolicies = this.mrfSettings.reduce((acc, { key, related_policy }) => {
         if (key !== ':mrf') {
           acc[key] = related_policy