Exception while talking to Ai agent (i think)

bjoern commented

2026-09-19 10:46:41 +02:00

Owner

══╡ EXCEPTION CAUGHT BY SCHEDULER LIBRARY ╞═════════════════════════════════════════════════════════
The following _TypeError was thrown during a scheduler callback:
Null check operator used on a null value

When the exception was thrown, this was the stack:
#0 ScrollPosition.maxScrollExtent (package:flutter/src/widgets/scroll_position.dart:239:49)
#1 _LibraryPageState._maybeFillViewport (package:doujinmanager/presentation/pages/library/library_page.dart:99:36)
#2 _LibraryPageState._scheduleViewportFillCheck. (package:doujinmanager/presentation/pages/library/library_page.dart:82:57)
#3 SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:1430:15)
#4 SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:1357:11)
#5 SchedulerBinding._handleDrawFrame (package:flutter/src/scheduler/binding.dart:1198:5)
#6 _invoke (dart:ui/hooks.dart:441:13)
#7 PlatformDispatcher._drawFrame (dart:ui/platform_dispatcher.dart:450:5)
#8 _drawFrame (dart:ui/hooks.dart:413:31)
════════════════════════════════════════════════════════════════════════════════════════════════════

══╡ EXCEPTION CAUGHT BY SCHEDULER LIBRARY ╞═════════════════════════════════════════════════════════ The following _TypeError was thrown during a scheduler callback: Null check operator used on a null value When the exception was thrown, this was the stack: #0 ScrollPosition.maxScrollExtent (package:flutter/src/widgets/scroll_position.dart:239:49) #1 _LibraryPageState._maybeFillViewport (package:doujinmanager/presentation/pages/library/library_page.dart:99:36) #2 _LibraryPageState._scheduleViewportFillCheck.<anonymous closure> (package:doujinmanager/presentation/pages/library/library_page.dart:82:57) #3 SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:1430:15) #4 SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:1357:11) #5 SchedulerBinding._handleDrawFrame (package:flutter/src/scheduler/binding.dart:1198:5) #6 _invoke (dart:ui/hooks.dart:441:13) #7 PlatformDispatcher._drawFrame (dart:ui/platform_dispatcher.dart:450:5) #8 _drawFrame (dart:ui/hooks.dart:413:31) ════════════════════════════════════════════════════════════════════════════════════════════════════

bjoern referenced this issue from a commit

2026-09-20 01:48:06 +02:00

fix: the library viewport check survives a position without dimensions

bjoern referenced this issue from a commit

2026-09-20 01:48:06 +02:00

fix: queue at most one library viewport-fill check