SOS!!! Twizy lost power

Hello everyone.
I'm having a problem with my Twizy.
Yesterday, I suddenly lost power. I felt jerks, and even when I pressed the accelerator pedal to the floor, it wouldn't go past two lines on the fuel gauge.
After getting home and sitting idle all night, this morning I used it normally without any loss of power, but when I got back to work, it did the same thing again.
No alerts or anything came on.
What could it be?
Urgent!!!

More information is required to be able to say something about this. Get yourself an OBD diagnostic device.

Did the european heatwave arrive at your place? This could be the reason for reducing power - the engine can not cool down while staying in sunlight

if Pipo had an ToM he would see his ; Motor Temp; Sevcon Temp ; Battery Temp in his Display.
and could modify his way of driving

Thanks for the prompt responses.
Indeed, high temperatures have arrived in southern Spain. This happened to me recently in extremely hot conditions, at 40-44°C, and after a 15 km uphill drive.
After cooling down a bit, it works normally,
so I understand it's going into self-protection mode, although no lights on the car come on.
Using an OBD diagnostic scanner, it shows a voltage of 3.69-3.70 volts in each cell, a correct total voltage for the traction battery and 13.4 volts for the 12-volt battery, with cell temperatures between 42-44°C each after letting it cool.
The scanner doesn't register any errors, and the battery is about 100%.
The only thing that surprises me is that in previous years it never did this in the same heat.
It's currently 2 years old and has 48,000 km.

No one get's younger

Id' say 15 km uphill at 40-44°C is the answer. The motor (or something else) is getting too hot.