How can I read a diagnostic message, in its entirety?

[iamFIREcracker]

Diagnostic messages are currently truncated:

LSP: Property 'hasSeen' does not exist on type '{ seenBy: { id: string; viewer: { id: string; } | null; createdAt: Date; }[]; hasSeen: { id: string; viewer: { id: string; } | null; createdAt: Date; }[]; profile: { ownerToken: u...

And this is making it hard to figure out what the actual error is. Is there a way to pop that message open into a floating window, or something?

Thanks in advance,
M.