I can hardly identify the pins from the circuit diagram. You could have post a better image.
Anyway, what I found from the circuit that you’ve connected LED+ to VCC and LED- to GROUND. If you do so the LCD’s backlight will be at its maximum and even if some characters being displayed, we can’t see them. It can also damage the backlight permanently.
Better you connect the LED+ pin to the variable of a 10K pot and any other pin of the pot to VCC, so that you can adjust the brightness of the LCD by varying the pot.