When switching Networks, Cafeteria Cached Images throw SocketErrors

I/flutter (30803): [2020-09-08 15:48:18.096534 | TCBlocDelegate | EVENT] Instance of 'CafeteriaOpeningBloc': Instance of 'ErrorEvent'
I/flutter (30803): [2020-09-08 15:48:18.100234 | TCBlocDelegate | TRANSITION] Instance of 'CafeteriaOpeningBloc': {
I/flutter (30803): 	Current: 	LoadingOpeningState([Instance of 'CafeteriaOpeningHours', Instance of 'CafeteriaOpeningHours', Instance of 'CafeteriaOpeningHours', Instance of 'CafeteriaOpeningHours'])
I/flutter (30803): 	Event: 		Instance of 'ErrorEvent'
I/flutter (30803): 	Next: 		ErrorOpeningState([Instance of 'CafeteriaOpeningHours', Instance of 'CafeteriaOpeningHours', Instance of 'CafeteriaOpeningHours', Instance of 'CafeteriaOpeningHours'])
I/flutter (30803): }
I/flutter (30803): [2020-09-08 15:48:18.102995 | TCBlocDelegate | EVENT] Instance of 'CafeteriaOpeningBloc': Instance of 'LoadedEvent'
I/flutter (30803): [2020-09-08 15:48:18.108656 | TCBlocDelegate | TRANSITION] Instance of 'CafeteriaOpeningBloc': {
I/flutter (30803): 	Current: 	ErrorOpeningState([Instance of 'CafeteriaOpeningHours', Instance of 'CafeteriaOpeningHours', Instance of 'CafeteriaOpeningHours', Instance of 'CafeteriaOpeningHours'])
I/flutter (30803): 	Event: 		Instance of 'LoadedEvent'
I/flutter (30803): 	Next: 		LoadedOpeningState([Instance of 'CafeteriaOpeningHours', Instance of 'CafeteriaOpeningHours', Instance of 'CafeteriaOpeningHours', Instance of 'CafeteriaOpeningHours'])
I/flutter (30803): }
I/flutter (30803): CacheManager: Failed to download file from https://www.maxmanager.de/daten-extern/sw-giessen/html/fotos/big/4545m77se_img_1373.jpg with error:
I/flutter (30803): SocketException: OS Error: Software caused connection abort, errno = 103, address = www.maxmanager.de, port = 35050
I/flutter (30803): CacheManager: Failed to download file from https://www.maxmanager.de/daten-extern/sw-giessen/html/fotos/big/ with error:
I/flutter (30803): SocketException: OS Error: Software caused connection abort, errno = 103, address = www.maxmanager.de, port = 35046
I/chatty  (30803): uid=10089(de.thm.kim.tinycampus.tcfrontend.dev) 1.ui identical 1 line
I/flutter (30803): CacheManager: Failed to download file from https://www.maxmanager.de/daten-extern/sw-giessen/html/fotos/big/ with error:
I/flutter (30803): SocketException: OS Error: Software caused connection abort, errno = 103, address = www.maxmanager.de, port = 35046
I/flutter (30803): CacheManager: Failed to download file from https://www.maxmanager.de/daten-extern/sw-giessen/html/fotos/big/4892rc337_8.jpg with error:
I/flutter (30803): SocketException: OS Error: Software caused connection abort, errno = 103, address = www.maxmanager.de, port = 35048
E/flutter (30803): [ERROR:flutter/lib/ui/ui_dart_state.cc(166)] Unhandled Exception: SocketException: OS Error: Software caused connection abort, errno = 103, address = uni-giessen.maxmanager.xyz, port = 35042
E/flutter (30803):
I/flutter (30803): [2020-09-08 15:48:18.163414 | TCBlocDelegate | EVENT] Instance of 'CafeteriaFeedbackBloc': LoadedFeedbackEvent(CafeteriaItemFeedback(CafeteriaItemRating(4.0, 1), [CafeteriaItemComment(jtzjtjrt, 2020-09-08T15:40:17.747+0000, 150, true, 1, wegweg)]))
I/flutter (30803): [2020-09-08 15:48:18.169420 | TCBlocDelegate | TRANSITION] Instance of 'CafeteriaFeedbackBloc': {
I/flutter (30803): 	Current: 	CafeteriaFeedbackErrorState(CafeteriaItemFeedback(CafeteriaItemRating(4.0, 1), [CafeteriaItemComment(jtzjtjrt, 2020-09-08T15:40:17.747+0000, 150, true, 1, wegweg)]))
I/flutter (30803): 	Event: 		LoadedFeedbackEvent(CafeteriaItemFeedback(CafeteriaItemRating(4.0, 1), [CafeteriaItemComment(jtzjtjrt, 2020-09-08T15:40:17.747+0000, 150, true, 1, wegweg)]))
I/flutter (30803): 	Next: 		IdleCafeteriaFeedbackState(CafeteriaItemFeedback(CafeteriaItemRating(4.0, 1), [CafeteriaItemComment(jtzjtjrt, 2020-09-08T15:40:17.747+0000, 150, true, 1, wegweg)]))
I/flutter (30803): }
I/flutter (30803): [2020-09-08 15:48:18.173227 | Catcher | INFO] Report result: false
I/flutter (30803): [2020-09-08 15:48:18.175709 | Catcher | WARNING] Instance of 'SentryHandler' failed to report error
I/flutter (30803): [2020-09-08 15:48:18.185819 | TCBlocDelegate | EVENT] Instance of 'CafeteriaFeedbackBloc': CafeteriaFeedbackErrorEvent()
I/flutter (30803): [2020-09-08 15:48:18.186034 | TCBlocDelegate | EVENT] Instance of 'CafeteriaFeedbackBloc': LoadedFeedbackEvent(CafeteriaItemFeedback(, ))
I/flutter (30803): [2020-09-08 15:48:18.186604 | TCBlocDelegate | TRANSITION] Instance of 'CafeteriaFeedbackBloc': {
I/flutter (30803): 	Current: 	IdleCafeteriaFeedbackState(CafeteriaItemFeedback(CafeteriaItemRating(4.0, 1), [CafeteriaItemComment(jtzjtjrt, 2020-09-08T15:40:17.747+0000, 150, true, 1, wegweg)]))
I/flutter (30803): 	Event: 		CafeteriaFeedbackErrorEvent()
I/flutter (30803): 	Next: 		CafeteriaFeedbackErrorState(CafeteriaItemFeedback(CafeteriaItemRating(4.0, 1), [CafeteriaItemComment(jtzjtjrt, 2020-09-08T15:40:17.747+0000, 150, true, 1, wegweg)]))
I/flutter (30803): }
I/flutter (30803): [2020-09-08 15:48:18.188032 | TCBlocDelegate | TRANSITION] Instance of 'CafeteriaFeedbackBloc': {
I/flutter (30803): 	Current: 	CafeteriaFeedbackErrorState(CafeteriaItemFeedback(CafeteriaItemRating(4.0, 1), [CafeteriaItemComment(jtzjtjrt, 2020-09-08T15:40:17.747+0000, 150, true, 1, wegweg)]))
I/flutter (30803): 	Event: 		LoadedFeedbackEvent(CafeteriaItemFeedback(, ))
I/flutter (30803): 	Next: 		IdleCafeteriaFeedbackState(CafeteriaItemFeedback(, ))
I/flutter (30803): }
E/flutter (30803): [ERROR:flutter/lib/ui/ui_dart_state.cc(166)] Unhandled Exception: NoSuchMethodError: The getter 'avgRating' was called on null.
E/flutter (30803): Receiver: null
E/flutter (30803): Tried calling: avgRating
I/flutter (30803): SocketException: OS Error: Software caused connection abort, errno = 103, address = www.maxmanager.de, port = 35056
I/flutter (30803): [2020-09-08 15:48:17.959433 | TCBlocDelegate | EVENT] Instance of 'CafeteriaFeedbackBloc': CafeteriaFeedbackErrorEvent()
I/flutter (30803): [2020-09-08 15:48:17.960904 | TCBlocDelegate | TRANSITION] Instance of 'CafeteriaFeedbackBloc': {
I/flutter (30803): 	Current: 	LoadingCafeteriaFeedbackState(CafeteriaItemFeedback(CafeteriaItemRating(4.0, 1), [CafeteriaItemComment(jtzjtjrt, 2020-09-08T15:40:17.747+0000, 150, true, 1, wegweg)]))
I/flutter (30803): 	Event: 		CafeteriaFeedbackErrorEvent()
I/flutter (30803): 	Next: 		CafeteriaFeedbackErrorState(CafeteriaItemFeedback(CafeteriaItemRating(4.0, 1), [CafeteriaItemComment(jtzjtjrt, 2020-09-08T15:40:17.747+0000, 150, true, 1, wegweg)]))
I/flutter (30803): }
I/flutter (30803): CacheManager: Failed to download file from https://www.maxmanager.de/daten-extern/sw-giessen/html/fotos/big/5s4een2r4_4.jpg with error:
I/flutter (30803): SocketException: OS Error: Software caused connection abort, errno = 103, address = www.maxmanager.de, port = 35058
I/flutter (30803): [2020-09-08 15:48:17.990899 | Catcher | INFO] Setup localization lazily!
I/flutter (30803): [2020-09-08 15:48:18.006163 | ConsoleHandler | INFO] ============================== CATCHER LOG ==============================
I/flutter (30803): [2020-09-08 15:48:18.006523 | ConsoleHandler | INFO] Crash occured on 2020-09-08 15:48:17.995102
I/flutter (30803): [2020-09-08 15:48:18.006812 | ConsoleHandler | INFO]
I/flutter (30803): [2020-09-08 15:48:18.007173 | ConsoleHandler | INFO] ---------- ERROR ----------
I/flutter (30803): [2020-09-08 15:48:18.007365 | ConsoleHandler | INFO] SocketException: OS Error: Software caused connection abort, errno = 103, address = www.maxmanager.de, port = 35052
I/flutter (30803): [2020-09-08 15:48:18.007461 | ConsoleHandler | INFO]
I/flutter (30803): [2020-09-08 15:48:18.008002 | ConsoleHandler | INFO] ------- STACK TRACE -------
I/flutter (30803): [2020-09-08 15:48:18.008382 | ConsoleHandler | INFO]
I/flutter (30803): [2020-09-08 15:48:18.008586 | ConsoleHandler | INFO] ======================================================================
I/flutter (30803): [2020-09-08 15:48:18.089547 | Catcher | INFO] Report result: true
E/flutter (30803): #0      Object.noSuchMethod  (dart:core-patch/object_patch.dart:51:5)
E/flutter (30803): #1      CafeteriaFeedbackErrorEvent._performAction.<anonymous closure> 
package:tc_frontend/…/cafeteria_feedback/cafeteria_feedback_event.dart:126
E/flutter (30803): #2      new Future.<anonymous closure>  (dart:async/future.dart:175:37)
E/flutter (30803): #3      _rootRun  (dart:async/zone.dart:1182:47)
E/flutter (30803): #4      _CustomZone.run  (dart:async/zone.dart:1093:19)
E/flutter (30803): #5      _CustomZone.runGuarded  (dart:async/zone.dart:997:7)
E/flutter (30803): #6      _CustomZone.bindCallbackGuarded.<anonymous closure>  (dart:async/zone.dart:1037:23)
E/flutter (30803): #7      _rootRun  (dart:async/zone.dart:1190:13)
E/flutter (30803): #8      _CustomZone.run  (dart:async/zone.dart:1093:19)
E/flutter (30803): #9      _CustomZone.bindCallback.<anonymous closure>  (dart:async/zone.dart:1021:23)
E/flutter (30803): #10     Timer._createTimer.<anonymous closure>  (dart:async-patch/timer_patch.dart:18:15)
E/flutter (30803): #11     _Timer._runTimers  (dart:isolate-patch/timer_impl.dart:397:19)
E/flutter (30803): #12     _Timer._handleMessage  (dart:isolate-patch/timer_impl.dart:428:5)
E/flutter (30803): #13     _RawReceivePortImpl._handleMessage  (dart:isolate-patch/isolate_patch.dart:168:12)
E/flutter (30803):