【BUG】has error

> error

```
networkInterface.js?2b41:103 POST http://localhost:8080/graphql 405 (Method Not Allowed)
HTTPFetchNetworkInterface.fetchFromRemoteEndpoint @ networkInterface.js?2b41:103
eval @ networkInterface.js?2b41:118
Promise.then (async)
HTTPFetchNetworkInterface.query @ networkInterface.js?2b41:118
Deduplicator.query @ Deduplicator.js?8561:15
eval @ QueryManager.js?2cbe:727
QueryManager.fetchRequest @ QueryManager.js?2cbe:724
QueryManager.fetchQuery @ QueryManager.js?2cbe:259
QueryManager.startQuery @ QueryManager.js?2cbe:567
ObservableQuery.setUpQuery @ ObservableQuery.js?35f8:330
ObservableQuery.onSubscribe @ ObservableQuery.js?35f8:281
subscriberFunction @ ObservableQuery.js?35f8:35
Observable.subscribe @ Observable.js?3ef5:13
observable.subscribe @ vue-apollo.esm.js?1632:3064
executeApollo @ vue-apollo.esm.js?1632:2771
start @ vue-apollo.esm.js?1632:2586
autostart @ vue-apollo.esm.js?1632:2550
addSmartQuery @ vue-apollo.esm.js?1632:3099
launch @ vue-apollo.esm.js?1632:3463
invokeWithErrorHandling @ vue.runtime.esm.js?a427:1854
callHook @ vue.runtime.esm.js?a427:4219
Vue._init @ vue.runtime.esm.js?a427:5008
VueComponent @ vue.runtime.esm.js?a427:5154
createComponentInstanceForVnode @ vue.runtime.esm.js?a427:3283
init @ vue.runtime.esm.js?a427:3114
createComponent @ vue.runtime.esm.js?a427:5978
createElm @ vue.runtime.esm.js?a427:5925
createChildren @ vue.runtime.esm.js?a427:6053
createElm @ vue.runtime.esm.js?a427:5954
patch @ vue.runtime.esm.js?a427:6477
Vue._update @ vue.runtime.esm.js?a427:3945
updateComponent @ vue.runtime.esm.js?a427:4066
get @ vue.runtime.esm.js?a427:4479
Watcher @ vue.runtime.esm.js?a427:4468
mountComponent @ vue.runtime.esm.js?a427:4073
Vue.$mount @ vue.runtime.esm.js?a427:8415
init @ vue.runtime.esm.js?a427:3118
createComponent @ vue.runtime.esm.js?a427:5978
createElm @ vue.runtime.esm.js?a427:5925
patch @ vue.runtime.esm.js?a427:6516
Vue._update @ vue.runtime.esm.js?a427:3945
updateComponent @ vue.runtime.esm.js?a427:4066
get @ vue.runtime.esm.js?a427:4479
Watcher @ vue.runtime.esm.js?a427:4468
mountComponent @ vue.runtime.esm.js?a427:4073
Vue.$mount @ vue.runtime.esm.js?a427:8415
Vue._init @ vue.runtime.esm.js?a427:5018
Vue @ vue.runtime.esm.js?a427:5085
eval @ main.js?3479:23
(anonymous) @ build.js:1044
__webpack_require__ @ build.js:660
fn @ build.js:86
(anonymous) @ build.js:1607
__webpack_require__ @ build.js:660
(anonymous) @ build.js:709
(anonymous) @ build.js:712
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vue-apollo.esm.js?1632:2662 Error sending the query 'posts' Error: Network request failed with status 405 - "Method Not Allowed"
at eval (networkInterface.js?2b41:129)
```

how to fix it ?
Thanks!