Ask an Immigration Solicitor. Get an Answer ASAP.
I am afraid the caution must have been disclosed in your application and failure to do so has led to refusal.
See here for further information on your issue: https://www.kingsleynapley.co.uk/insights/blogs/immigration-law-blog/common-good-character-issues-when-applying-to-naturalise-as-a-british-citizen
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