2.24.0alpha3 is broken: `Field 'onlyNotifyIfNoReviews' is required for type with serial name 'com.ichi2.anki.reviewreminders.ReviewReminder', but it was missing`

[ZornHadNoChoice]

Checked for duplicates?

• This issue is not a duplicate

Does it also happen in the desktop version?

• This bug does not occur in the latest version of Anki Desktop

What are the steps to reproduce this bug?

I can't open the parallel A version!

Expected behaviour

It works.

Debug info

v2.24.0alpha3

This is from the Google Play 2.23.1 version, in case device info is helpful:

AnkiDroid Version = 2.23.1 (3f3133b496b531383e9a6494f5a7704634935308)  
Backend Version = 0.1.62-anki25.09.2 (25.09.2 3890e12c9e48c028c3f12aa58cb64bd9f8895e30)  
Android Version = 13 (SDK 33)  
ProductFlavor = play  
Device Info = Xiaomi | POCO | mondrian | mondrian_global | 23013PC75G | qcom  
Webview User Agent = Mozilla/5.0 (Linux; Android 13; 23013PC75G Build/TKQ1.220905.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/143.0.7499.192 Mobile Safari/537.36  
ACRA UUID = 3792582f-98ac-430e-ae42-4ace0156bf29  
FSRS = 5.1.0 (Enabled: true)  
Crash Reports Enabled = true

(Optional) Anything else you want to share?

No response

Research

• I have checked the manual and the FAQ and could not find a solution to my issue
• (Optional) I have confirmed the issue is not resolved in the latest alpha release (instructions)

[david-allison]

I can't immediately reproduce this, have asked @mikehardy to pause Google rollout while we investigate

• 'Sync from AnkiWeb' does not work if using the full flavor

---

v2.24.0alpha2...v2.24.0alpha3

[david-allison]

@ZornHadNoChoice Are you able to provide logcat output?

We can't reproduce this on:

• Pixel 9 Pro
• Samsung S21 5G
• Redmi 8A
• Redmi A4 5G
• Redmi Note 11 Pro+ 5G (India)
• API 35 Phone emulator
  • various tests/uninstalls/data wipes
• API 34 Tablet emulator

[mikehardy]

Rollout of the affected version is paused which should limit the "blast radius" / "quantity of affected people" at any rate.

Looks like we have a couple issues

You have my continued gratitude for testing and rapid feedback @ZornHadNoChoice - I really appreciate it

[david-allison]

My suspicions:

• feat:Add webview provider name and versioncode in the debug info #20020
• feat(reminders): request notification permissions #19167

[david-allison]

@ZornHadNoChoice Could I also confirm that 2.24alpha2 did work?

~4 devs haven't been able to reproduce this yet. Thank you so much for the report, and we're all looking into this as a matter of urgency

[ZornHadNoChoice]

Yes it did. I'm downloading the Android Studio app to get the Logcat thingy. Please wait a bit.

I actually was hesitant to open this issue. Glad I did!

Edit: it's taking some time to download due to slow Internet. I also have to go out so expect it to take an hour or two. Here's a recording for now:

Details

Screenrecorder-2026-01-19-18-26-25-870.mp4

[ZornHadNoChoice]

Xiaomi-23013PC75G-Android-13_2026-01-19_192902.zip

@david-allison I hope this is enough. Let me know if I there's more I can do.

[david-allison]

@ZornHadNoChoice Thanks!! Is it feasible to export it in .txt?

EDIT: Nevermind, Android Studio imports them directly in a good interface

[david-allison]

FATAL EXCEPTION: main
Process: com.ichi2.anki.a, PID: 24088
java.lang.RuntimeException: Unable to create application com.ichi2.anki.AnkiDroidApp: kotlinx.serialization.MissingFieldException: Field 'onlyNotifyIfNoReviews' is required for type with serial name 'com.ichi2.anki.reviewreminders.ReviewReminder', but it was missing at path: $['ReviewReminderId(value=3)']
	at android.app.ActivityThread.handleBindApplication(ActivityThread.java:7087)
	at android.app.ActivityThread.-$$Nest$mhandleBindApplication(Unknown Source)
	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2207)
	at android.os.Handler.dispatchMessage(Handler.java:106)
	at android.os.Looper.loopOnce(Looper.java:210)
	at android.os.Looper.loop(Looper.java:299)
	at android.app.ActivityThread.main(ActivityThread.java:8247)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:559)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:954)
Caused by: kotlinx.serialization.MissingFieldException: Field 'onlyNotifyIfNoReviews' is required for type with serial name 'com.ichi2.anki.reviewreminders.ReviewReminder', but it was missing at path: $['ReviewReminderId(value=3)']
	at kotlinx.serialization.json.internal.StreamingJsonDecoder.decodeSerializableValue(StreamingJsonDecoder.kt:95)
	at kotlinx.serialization.encoding.AbstractDecoder.decodeSerializableValue(AbstractDecoder.java:43)
	at kotlinx.serialization.encoding.AbstractDecoder.decodeSerializableElement(AbstractDecoder.java:70)
	at kotlinx.serialization.json.internal.StreamingJsonDecoder.decodeSerializableElement(StreamingJsonDecoder.kt:168)
	at kotlinx.serialization.encoding.CompositeDecoder.decodeSerializableElement$default(Decoding.kt:539)
	at kotlinx.serialization.internal.MapLikeSerializer.readElement(MapLikeSerializer.java:111)
	at kotlinx.serialization.internal.MapLikeSerializer.readElement(MapLikeSerializer.java:84)
	at kotlinx.serialization.internal.AbstractCollectionSerializer.readElement$default(CollectionSerializers.kt:51)
	at kotlinx.serialization.internal.AbstractCollectionSerializer.merge(CollectionSerializers.kt:36)
	at kotlinx.serialization.internal.AbstractCollectionSerializer.deserialize(CollectionSerializers.kt:43)
	at kotlinx.serialization.json.internal.StreamingJsonDecoder.decodeSerializableValue(StreamingJsonDecoder.kt:69)
	at kotlinx.serialization.json.Json.decodeFromString(Json.kt:149)
	at com.ichi2.anki.reviewreminders.ReviewRemindersDatabase.decodeJson(ReviewRemindersDatabase.kt:380)
	at com.ichi2.anki.reviewreminders.ReviewRemindersDatabase.getRemindersForKey(ReviewRemindersDatabase.kt:238)
	at com.ichi2.anki.reviewreminders.ReviewRemindersDatabase.getAllAppWideReminders(ReviewRemindersDatabase.kt:253)
	at com.ichi2.anki.services.AlarmManagerService$Companion.scheduleAllEnabledReviewReminderNotifications(AlarmManagerService.java:226)
	at com.ichi2.anki.services.AlarmManagerService$Companion.scheduleAllNotifications(AlarmManagerService.java:280)
	at com.ichi2.anki.AnkiDroidApp.onCreate(AnkiDroidApp.kt:206)
	at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:1278)
	at android.app.ActivityThread.handleBindApplication(ActivityThread.java:7081)
	at android.app.ActivityThread.-$$Nest$mhandleBindApplication(Unknown Source) 
	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2207) 
	at android.os.Handler.dispatchMessage(Handler.java:106) 
	at android.os.Looper.loopOnce(Looper.java:210) 
	at android.os.Looper.loop(Looper.java:299) 
	at android.app.ActivityThread.main(ActivityThread.java:8247) 
	at java.lang.reflect.Method.invoke(Native Method) 
	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:559) 
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:954) 
Caused by: kotlinx.serialization.MissingFieldException: Field 'onlyNotifyIfNoReviews' is required for type with serial name 'com.ichi2.anki.reviewreminders.ReviewReminder', but it was missing
	at kotlinx.serialization.MissingFieldException.<init>(SerializationExceptions.kt:98)
	at kotlinx.serialization.internal.PluginExceptionsKt.throwMissingFieldException(PluginExceptions.kt:20)
	at com.ichi2.anki.reviewreminders.ReviewReminder.<init>(ReviewReminder.kt:190)
	at com.ichi2.anki.reviewreminders.ReviewReminder.<init>(ReviewReminder.kt)
	at com.ichi2.anki.reviewreminders.ReviewReminder$$serializer.deserialize(ReviewReminder.kt:190)
	at com.ichi2.anki.reviewreminders.ReviewReminder$$serializer.deserialize(ReviewReminder.kt:190)
	at kotlinx.serialization.json.internal.StreamingJsonDecoder.decodeSerializableValue(StreamingJsonDecoder.kt:69)
	at kotlinx.serialization.encoding.AbstractDecoder.decodeSerializableValue(AbstractDecoder.java:43) 
	at kotlinx.serialization.encoding.AbstractDecoder.decodeSerializableElement(AbstractDecoder.java:70) 
	at kotlinx.serialization.json.internal.StreamingJsonDecoder.decodeSerializableElement(StreamingJsonDecoder.kt:168) 
	at kotlinx.serialization.encoding.CompositeDecoder.decodeSerializableElement$default(Decoding.kt:539) 
	at kotlinx.serialization.internal.MapLikeSerializer.readElement(MapLikeSerializer.java:111) 
	at kotlinx.serialization.internal.MapLikeSerializer.readElement(MapLikeSerializer.java:84) 
	at kotlinx.serialization.internal.AbstractCollectionSerializer.readElement$default(CollectionSerializers.kt:51) 
	at kotlinx.serialization.internal.AbstractCollectionSerializer.merge(CollectionSerializers.kt:36) 
	at kotlinx.serialization.internal.AbstractCollectionSerializer.deserialize(CollectionSerializers.kt:43) 
	at kotlinx.serialization.json.internal.StreamingJsonDecoder.decodeSerializableValue(StreamingJsonDecoder.kt:69) 
	at kotlinx.serialization.json.Json.decodeFromString(Json.kt:149) 
	at com.ichi2.anki.reviewreminders.ReviewRemindersDatabase.decodeJson(ReviewRemindersDatabase.kt:380) 
	at com.ichi2.anki.reviewreminders.ReviewRemindersDatabase.getRemindersForKey(ReviewRemindersDatabase.kt:238) 
	at com.ichi2.anki.reviewreminders.ReviewRemindersDatabase.getAllAppWideReminders(ReviewRemindersDatabase.kt:253) 
	at com.ichi2.anki.services.AlarmManagerService$Companion.scheduleAllEnabledReviewReminderNotifications(AlarmManagerService.java:226) 
	at com.ichi2.anki.services.AlarmManagerService$Companion.scheduleAllNotifications(AlarmManagerService.java:280) 
	at com.ichi2.anki.AnkiDroidApp.onCreate(AnkiDroidApp.kt:206) 
	at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:1278) 
	at android.app.ActivityThread.handleBindApplication(ActivityThread.java:7081) 
	at android.app.ActivityThread.-$$Nest$mhandleBindApplication(Unknown Source) 
	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2207) 
	at android.os.Handler.dispatchMessage(Handler.java:106) 
	at android.os.Looper.loopOnce(Looper.java:210) 
	at android.os.Looper.loop(Looper.java:299) 
	at android.app.ActivityThread.main(ActivityThread.java:8247) 
	at java.lang.reflect.Method.invoke(Native Method) 
	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:559) 
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:954) 

@ericli3690 FYI