fixed issue company

src/container/MasterData/Perusahaan/VisualPerusahaan.js

 import React, { Component } from 'react';
 import { Container, Row, Col } from "react-bootstrap";
-import { makeStyles, createMuiTheme, MuiThemeProvider } from '@material-ui/core/styles';
-import { TextField } from '@material-ui/core';
-import MenuItem from '@material-ui/core/MenuItem';
+import { Typography, withStyles, Snackbar } from '@material-ui/core';
 import Perusahaan from "./Perusahaan";
-import TreeView from '@material-ui/lab/TreeView';
-import ExpandMoreIcon from '@material-ui/icons/ExpandMore';
-import ChevronRightIcon from '@material-ui/icons/ChevronRight';
-import TreeItem from '@material-ui/lab/TreeItem';
+import MuiAlert from '@material-ui/lab/Alert';
 import Nestable from 'react-nestable/dist/Nestable';
 import AddIcon from '@material-ui/icons/Add';
 import RemoveIcon from '@material-ui/icons/Remove';
 import api from '../../../api';
 
+const Alert = withStyles({
+})((props) => <MuiAlert elevation={6} variant="filled" {...props} />);
+
 export default class VisualPerusahaan extends Component {
     constructor(props) {
         super(props)
@@ -40,7 +38,10 @@ export default class VisualPerusahaan extends Component {
                 },
             ],
             arrayCollapse: [],
-            defaultCollapsed: false
+            defaultCollapsed: false,
+            alert: false,
+            tipeAlert: '',
+            messageAlert: '',
         }
     }
 
@@ -50,9 +51,16 @@ export default class VisualPerusahaan extends Component {
 
     getPerusahaan() {
         api.create().getPerusahaanHierarki().then((response) => {
-            if (response.data.status == 'success') {
-                this.setState({ items: response.data.data })
-                console.log(response.data.data)
+            console.log(response)
+            if (response.data) {                
+                if (response.data.status == 'success') {
+                    this.setState({ items: response.data.data })
+                    console.log(response.data.data)
+                } else {
+                    this.setState({ alert: true, messageAlert: response.data.message, tipeAlert: 'warning' })
+                }
+            } else {
+                this.setState({ alert: true, messageAlert: response.problem, tipeAlert: 'error' })
             }
         })
     }
@@ -98,6 +106,9 @@ export default class VisualPerusahaan extends Component {
         )
     };
 
+    closeAlert() {
+        this.setState({ alert: false })
+    }
 
     render() {