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?
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