While in the middle of wudhu, if any of the causes that break the wudhu takes place, then should I start wudhu from beginning again?

Answered according to Hanafi Fiqh by Darulifta-Deoband.org

بسم الله الرحمن الرحيم

(Fatwa: 1007/601/L=1433)

Yes, in case you encounter anything which breaks the wudhu while making wudhu you would have to repeat your wudhu.

Allah knows Best!

Darul Ifta,
Darul Uloom Deoband