This question already has an answer here:
I wanted to flag a question as "minimal understanding", but this close reason is replaced by:
This question was caused by a problem that can't be reproduced or a simple typographical error. While similar questions may be on-topic here, this one was solved in a manner unlikely to help future readers. This can often be avoided by identifying and closely inspecting the shortest program necessary to reproduce the problem before posting.
But this close reason doesn't fit for questions with a "minimal understanding of the problem". So how should I flag these questions?