[bug] Posting undo of a "like" to the inbox may result in 500 internal server error

[rnwgnr]

Describe the bug with a clear and concise description of what the bug is.

Just interpreting the logs:
When a remote instance tries to "undo" a like but that activity never reached the local instance for some reason, the request fails with a 500

Log entries:

timestamp="2024-05-04 01:00:23.407" func=server.glob..func1.Logger.func13.1 level=ERROR latency="11.64543ms" userAgent="Friendica 'Yellow Archangel' 2024.03-1557; https://social.alfredbuehler.ch" method=POST statusCode=500 path=/users/rwa/inbox clientIP=2a00:1128:1:1::157:84 pubKeyID=https://social.alfredbuehler.ch/profile/abu#main-key errors="Error #01: PostInboxScheme: error calling sideEffectActor.PostInbox: Undo: error undoing like: undoLike: error converting ActivityStreams Like to fave: getASObjectStatus: error getting object account from database: sql: no rows in result set\n" requestID=wf6htgcf040006t20ak0 msg="Internal Server Error: wrote 33B"
timestamp="2024-05-04 01:00:28.535" func=server.glob..func1.Logger.func13.1 level=ERROR latency="7.773366ms" userAgent="Friendica 'Yellow Archangel' 2024.03-1557; https://social.alfredbuehler.ch" method=POST statusCode=500 path=/users/rwa/inbox clientIP=2a00:1128:1:1::157:84 pubKeyID=https://social.alfredbuehler.ch/profile/abu#main-key errors="Error #01: PostInboxScheme: error calling sideEffectActor.PostInbox: Undo: error undoing like: undoLike: error converting ActivityStreams Like to fave: getASObjectStatus: error getting object account from database: sql: no rows in result set\n" requestID=y3ghtgcf04000g5f5kxg msg="Internal Server Error: wrote 33B"

What's your GoToSocial Version?

v0.15.0

GoToSocial Arch

arm64 binary

What happened?

No response

What you expected to happen?

The request should not result in a "internal server error" but rather be handled gracefully.

The remote instance will otherwise retry quite a few times.

How to reproduce it?

No response

Anything else we need to know?

No response

[tsmethurst]

Ah thanks, we just need to mask that error I think.