Some errors, like this one below, are really vague, so it’s hard to pinpoint. If the block that caused it was directly linked (rather than just linking to the flow) it would make it much easier to troubleshoot.
i think it already redirects you to the block when you click the source link
It didn’t for this error, it redirected to the trigger. There are no inputs in the trigger since the error was in a custom block.
This error is configured to link to the originating block where possible. If one wasn’t provided, then it wasn’t available. Unfortunately, it isn’t always possible to pinpoint the block associated with a given error due to performance optimizations. This can’t be changed.