App Crashed if no Internet

When no Internet connection is available, App is crashed with following error on iOS:

[VERBOSE-2:ui_dart_state.cc(157)] Unhandled Exception: SocketException: Failed host lookup: 'fonts.gstatic.com' (OS Error: nodename nor servname provided, or not known, errno = 8)
#0      IOClient.send (package:http/src/io_client.dart:33:23)           
<asynchronous suspension>                                               
#1      BaseClient._sendUnstreamed (package:http/src/base_client.dart:169:38)
#2      BaseClient.get (package:http/src/base_client.dart:32:7)         
#3      _httpFetchFont (package:google_fonts/src/google_fonts_base.dart:140:37)
#4      loadFontIfNecessary (package:google_fonts/src/google_fonts_base.dart:99:16)
<asynchronous suspension>                                               
#5      googleFontsTextStyle (package:google_fonts/src/google_fonts_base.dart:64:3)
#6      GoogleFonts.poppins (package:google_fonts/google_fonts.dart:32044:12)
#7      GoogleFonts.poppinsTextTheme (package:google_fonts/google_fonts.dart:32057:29)
#8      main (package:codescanner/main.dart:18:32)                      
#9      _runMainZoned.<anonymous closure>.<anonymous closure> (dart:ui/hooks.dart:239:25)
#10     _rootRun (dart:async/zone.dart:1126:13)                         
#11     _CustomZone.run (dart:async/zone.dart:1023:19)                  
#12     _runZoned (dart:async/zone.dart:1518:10)                        
#13     runZoned (dart:async/zone.dart:1502:12)                         
#14     _runMainZoned.<anonymous closure> (dart:ui/hooks.dart:231:5)    
#15     _startIsolate.<anonymous closure> (dart:isolate-patch/isolate_patch.dart:307:19)
#16     _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:174:12)

If no Internet is available, it should default to system font (like it does on Android).