Red line across all superior zone of the panels

1

Hi

    Im having the red line problem in my panel chain. 
    I have checked and re-checked the Pi Gpio connection and (obviously) if i take out R1 pin the red line 
   dissapears (also red color).

    Im using 3 32x32 panels in one chain, a 3B + Pi and my C# code is:

new RGBLedMatrix(new RGBLedMatrixOptions { ChainLength = 3, Cols = 32, Rows = 32, Multiplexing = 1, GpioSlowdown = 4, ShowRefreshRate = false})

   ![Red line](https://i.imgur.com/lTBefcD.jpg)

   [Panels link](https://es.aliexpress.com/item/32635556560.html?gatewayAdapt=glo2esp&spm=a2g0o.9042311.0.0.274263c0blnaDG)

   ![Panels](https://i.imgur.com/kWzjZ9A.jpg)

   ![Pins](https://i.imgur.com/xISwdac.jpg)

   ![Pins](https://i.imgur.com/xo1X58J.jpg)

What im doing wrong?