The same happened to me yesterday.
1500 miles from home (Denver area) in the middle of Sequoia National Park no juice whatsoever. Bike was pointed downhill so rolled it and it started. Drove 75 miles west to Fresno where it is now at the dealer who will be installing a new stator tomorrow.
Bike is 16 years old and has 95k miles and things happen, but the time and location just is a pain in the you-know-what.
BTW: yes, it ran for 75 miles but it was not happy, it had to be kept at relative high rpm.
But I made it to about 5 miles from dealer, better than being stuck in the middle of nowhere.
I am on the 2nd replacement Stator and R/R.
The first one was a no crank 20 miles from the house. Four jumps from a vehicle to get home.
2nd failure was detected when my led indicator was off. It lights up at 13.5 volts.
I suggest a volt meter or a led charge indicator so you can see what is going on.
I have a picture of a 3 component charge indicator, 12v zener diode, led, a resistor.
The OEM R/R is a "shunt" regulating unit, it shorts the stator to controls battery voltage.
My 1st replacement R/R was a better shunting regulator.
My 2nd replacement R/R is a series regulating unit, it opens the stator output to control battery voltage.
Replacing filament bulbs with leds means less current needed but more shunting/shorting required to regulate the DC voltage.