add message errors in new action.

src/app/services/functions/file.service.ts

@@ -51,7 +51,9 @@ export class FileService {
     private platform: Platform,
     private loadingCtrl: LoadingController,
     private http: HttpClient,
-  ) { }
+  ) {
+    this.headers = new HttpHeaders();
+  }
 
   uploadFile(formData:any){
 
@@ -71,6 +73,9 @@ export class FileService {
 
     params = params.set("path", guid);
 
+    this.headers = this.headers.set('responseType', 'blob');
+    this.headers = this.headers.set('Content-Type', 'application/octet-stream');
+
     let options = {
       headers: this.headers,
       params: params