# Error 500: SwiftProtobuf.BinaryDecodingError Error 1 **URL:** \ **Category:** Help\ **Created:** [June 22, 2023, 6:26am UTC](https://forums.ankiweb.net/t/error-500-swiftprotobuf-binarydecodingerror-error-1/31449 "2023-06-22T06:26:56Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![kohei](https://avatars.discourse-cdn.com/v4/letter/k/47e85d/32.png) [@kohei](https://forums.ankiweb.net/u/kohei)\ **Post date:** [June 22, 2023, 6:26am UTC](https://forums.ankiweb.net/t/error-500-swiftprotobuf-binarydecodingerror-error-1/31449/1 "2023-06-22T06:26:57Z")
Hello everyone, I’ve recently encountered an issue with the Anki app following its update, as well as the latest iOS update. Every time I attempt to open a card in the Anki app, I am faced with the following error message: Error:500: (SwiftProtobuf. BinaryDecodingError Error 1) I’m currently running iOS version 16.5.1 and using Anki version 2.0.93 (20093.9). The problem started occurring immediately after I installed these updates. I was wondering if anyone else has encountered the same problem or if there are any known solutions or troubleshooting steps. Any guidance would be greatly appreciated, as I rely heavily on Anki for my daily studies. ![IMG_1BE67881009A-1](https://us1.discourse-cdn.com/flex002/uploads/anki2/original/2X/4/4063cb8ec61fe1729fc18ffd3dc2d62923a1af19.jpeg) ---
**Author:** ![dae](https://sea2.discourse-cdn.com/flex002/user_avatar/forums.ankiweb.net/dae/32/65_2.png) [@dae](https://forums.ankiweb.net/u/dae)\ **Post date:** [June 22, 2023, 6:27am UTC](https://forums.ankiweb.net/t/error-500-swiftprotobuf-binarydecodingerror-error-1/31449/2 "2023-06-22T06:27:53Z")
This looks like it’s an issue with the custom scheduling feature - I presume you’re using FSRS? I’ll get a fix sent to Apple in the next day or two; in the mean time if you temporarily remove it from your study options, it should make the error go away. ---
**Author:** ![kohei](https://avatars.discourse-cdn.com/v4/letter/k/47e85d/32.png) [@kohei](https://forums.ankiweb.net/u/kohei)\ **Post date:** [June 22, 2023, 6:39am UTC](https://forums.ankiweb.net/t/error-500-swiftprotobuf-binarydecodingerror-error-1/31449/3 "2023-06-22T06:39:31Z")
Thank you for your prompt response. You’re correct in your presumption, I am indeed using the FSRS feature. I’ll follow your advice and temporarily remove it from my study options. I look forward to the forthcoming fix and really appreciate your help with this issue. ---
**Author:** ![rjh336](https://avatars.discourse-cdn.com/v4/letter/r/47e85d/32.png) [@rjh336](https://forums.ankiweb.net/u/rjh336)\ **Post date:** [June 22, 2023, 6:30pm UTC](https://forums.ankiweb.net/t/error-500-swiftprotobuf-binarydecodingerror-error-1/31449/4 "2023-06-22T18:30:19Z")
Just to tack on to the above: The error has persisted even after deleting the FSRS feature. Hope that this can assist in the update. ---
**Author:** ![rjh336](https://avatars.discourse-cdn.com/v4/letter/r/47e85d/32.png) [@rjh336](https://forums.ankiweb.net/u/rjh336)\ **Post date:** [June 22, 2023, 6:52pm UTC](https://forums.ankiweb.net/t/error-500-swiftprotobuf-binarydecodingerror-error-1/31449/5 "2023-06-22T18:52:36Z")
An update to my update: Simply deleting the FSRS feature will not remedy the problem, but deleting the code from the ‘custom scheduling’ section in deck options will. Apologies for any confusion; hope this helps. ---
**Author:** ![dae](https://sea2.discourse-cdn.com/flex002/user_avatar/forums.ankiweb.net/dae/32/65_2.png) [@dae](https://forums.ankiweb.net/u/dae)\ **Post date:** [June 23, 2023, 10:36am UTC](https://forums.ankiweb.net/t/error-500-swiftprotobuf-binarydecodingerror-error-1/31449/6 "2023-06-23T10:36:35Z")
An update has been sent to Apple, and should hopefully be available within 24 hours. ---
**Author:** ![Sashulechka](https://avatars.discourse-cdn.com/v4/letter/s/c57346/32.png) [@Sashulechka](https://forums.ankiweb.net/u/Sashulechka)\ **Post date:** [June 24, 2023, 5:06am UTC](https://forums.ankiweb.net/t/error-500-swiftprotobuf-binarydecodingerror-error-1/31449/7 "2023-06-24T05:06:30Z")
Update was released ---
**Author:** ![system](https://us1.discourse-cdn.com/flex002/uploads/anki2/original/1X/8f1279ababc5879d54e4838989f606cfe55af8c7.jpeg) [@system](https://forums.ankiweb.net/u/system)\ **Post date:** [July 24, 2023, 5:07am UTC](https://forums.ankiweb.net/t/error-500-swiftprotobuf-binarydecodingerror-error-1/31449/8 "2023-07-24T05:07:21Z")
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