A state of total confusion with no order:
Snow and ice have caused chaos on the roads.
Ever since our secretary walked out, the office has been in a state of total/utter chaos.
We muddled up the name labels and chaos ensued (= resulted).
Cambridge Dictionary
More examples
Our house is in complete chaos at the moment.
There was chaos in the theatre when the bomb went off.
Computer failure has created chaos in the passport office.
Police are reporting traffic chaos on the motorways.
complete disorder and confusion. Example: snow caused chaos in the region Physics: the property of a complex system whose behaviour is so unpredictable as to appear random, owing to great sensitivity to small changes in conditions. the formless matter supposed to have existed before the creation of the universe. Reference: Oxford Dictionary.