Seeeduino V4.2

Hi, I have purchased color sensor, seeeduino V4.2 and 12c color sensorv 2.0, and want to use skech_2a.ino to detect the colors Red Blue Green. With the outputs Clk_pin 7 and Data _pin 8 and Num_Leds 1. When I select the table Arduino / Genuino Uno as recommended, I get an error message (Error uploading, check if the selected board is currently available) How do I resolve this problem? Can you help me with that. I want outputs so I can continue with. In advance, thank you somebody can help me with that Roald

The web site I looked at says to select a different board

Please don't cross post.