Another option if the message isn’t there is to press printscreen key when you see the message and review it from the pasted screenshot. I agree that It would be helpful to be able to isolate all error messages that show in the popups. This is especially true if there are multiple in quick succession.
the Developer Tools window does not contain the messages the OP is referring to. A screen shot is a workaround, but the truth seems to be that these messages just get thrown away and aren’t saved or stored anywhere in Obsidian.
Thanks, that sounds like a good approach. It is so frustrating to have long complex messages with lists of information just vaporize tantalizingly before I can read it.