added first error dialogs w/o any error specification

frontend/src/pages/Cache.vue

@@ -159,9 +159,9 @@
               console.log("POST api/createCache: " + response.statusText);
               this.$store.commit('cacheCollector/RESET_NEW_CACHE');
               this.$router.push({ path: '/overview' });
-            })
+            }).catch((error) => {
-            .catch((error) => {
+            this.$store.commit('dialog/NEW_MESSAGE_DIALOG', { message: error })
-            });
+          });
           } else {
           // TODO update existing Cache
         }

frontend/src/pages/Overview.vue

@@ -117,7 +117,9 @@
           .then((response) => {
             console.log("Caches: " + this.caches);
             this.caches = response.data;
-          })
+          }).catch((error) => {
+          this.$store.commit('dialog/NEW_MESSAGE_DIALOG', { message: error })
+        })
       },
       addCache() {
         this.$router.push({path: `/cache`})
@@ -129,7 +131,9 @@
         this.$axios.delete('/api/deleteCache', {params: {cacheID: id}})
           .then((response) => {
             this.fetchAllCaches()
-          })
+          }).catch((error) => {
+          this.$store.commit('dialog/NEW_MESSAGE_DIALOG', { message: error })
+        })
       },
       startCache(cacheID) {
         const userToken = JSON.parse(localStorage.getItem('userToken')).token;
@@ -147,7 +151,9 @@
             console.log(stationID);
             //this.$router.push({path: `/station/${stationID}`})
             this.$router.push({path: `/station/${cacheID}/${stationID}`})
-          })
+          }).catch((error) => {
+          this.$store.commit('dialog/NEW_MESSAGE_DIALOG', { message: error })
+        })
       }
     }
   }

frontend/src/pages/Profile.vue

@@ -127,7 +127,9 @@
         this.$axios.get('/api/getMyCaches', { params: {token}} )
           .then((response) => {
           this.startedCaches = response.data;
-          });
+          }).catch((error) => {
+          this.$store.commit('dialog/NEW_MESSAGE_DIALOG', { message: error })
+        });
       },
       continueCache(cacheID) {
       }

frontend/src/pages/StationView.vue

@@ -85,8 +85,12 @@
                 const stationView = response.data.find(station => station.id === Number(this.$route.params.id));
                 console.log(JSON.stringify(stationView));
                 this.data.station = stationView;
-              });
+              }).catch((error) => {
-          });
+              this.$store.commit('dialog/NEW_MESSAGE_DIALOG', { message: error })
+            });
+          }).catch((error) => {
+          this.$store.commit('dialog/NEW_MESSAGE_DIALOG', { message: error })
+        });
       }
     }
   }