I had that problem once. It was hard starting and ended up pushing bike home 2 miles. It was still under warranty Took it to dealer had a bad stator. Warranty took care of it. Found out had roadside assist on insurance and would not have had to push bike. Felt like Curly of the Three Stooges

I was so much older then, I am younger than that now (Wrote By Dylan Sung by the BYRDS,)