In kanban, you shouldn't move the card reverse to previous state right? If that so, what should I do when there's something like temporary stop this card until the committee board approve the change to this card. Do it need to stay there to waste the WIP? Should I need to remove it from it from kanban board temporary and redo the flow again when the committee board approve?
One of the main principles of Kanban is visibility. In this case, the fact an item is stuck and counting towards your WIP for that step in your workflow is giving you visibility of a blockage.
As for actions you can take, find out whether this problem has occurred before or if is it an extraordinary event.
If it's a one off event, just do whatever you can to remove the blocker in this instance. If you need approval from a committee before the item progresses but they don't meet for a couple of weeks can you call an emergency session or get approval via email for this item?
If the same blocking issue is happening repeatedly, you might need to adjust your workflow to account for something like approval.
e.g. if your current workflow is:
Analyse > Code > Test > Release
and some items need an approval before work can start, you might add an approve step where items can queue giving you:
Analyse > Approve > Code > Test > Release
You could consider having a separate swimlane on your board for items that need approval. This might help you monitor the number of things coming up that need to go through this step so you can sequence the approval meeting to better suit the arrival rate of this type of work.
I recommend you to leave the card in the column where the problem occurred and not count it in the WIP limit. Also, use a visual sign as an information for your team members that there is a problem with this issue and write a description, explaining what it is. See how you can do it using online kanban board on this Kanban blog.