Show error when fail to connect

main.py

@@ -6,6 +6,7 @@ import sys
 from threading import Thread
 
 import requests
+from requests.exceptions import ConnectionError
 import wx
 from wx import Size, Point
 
@@ -64,6 +65,7 @@ class MyApplication(wx.App):
     def OnInit(self):
         self.SetAppName(WINDOW_TITLE)
         if is_admin():
+            try:
                 version = get_version_from_repo()
                 create_install_folder()
                 if get_installed_version() != version:
@@ -77,6 +79,11 @@ class MyApplication(wx.App):
                                            WINDOW_TITLE, style=wx.OK | wx.ICON_HAND)
                     dlg.ShowModal()
                     dlg.Destroy()
+            except Exception as e:
+                dlg = wx.MessageDialog(None, str(e),
+                                       WINDOW_TITLE, style=wx.OK | wx.ICON_HAND)
+                dlg.ShowModal()
+                dlg.Destroy()
         else:
             dlg = wx.MessageDialog(None, "This application requires administrative privileges to run",
                                    WINDOW_TITLE, style=wx.OK | wx.ICON_HAND)
@@ -187,6 +194,11 @@ class WorkerThread(Thread):
             file = open(INSTALLED_VERSION_PATH, "w")
             file.write(self.version)
             file.close()
+        except Exception as e:
+            dlg = wx.MessageDialog(None, str(e),
+                                   WINDOW_TITLE, style=wx.OK | wx.ICON_HAND)
+            dlg.ShowModal()
+            dlg.Destroy()
         finally:
             wx.PostEvent(self.dlg, ProcessTerminated())