Pixel de facebook en pagina web

necesito instalar el pixel de facebook en mi pagina web es algo sencillo y rapido pero no tengo conocimiento de desarrollo web con html, este es el error que hay al ver el diagnostico del pixel We detected event code but the pixel has not activated for this event, so no information was sent to Facebook. This could be due to an error in the code, but could also occur if the pixel fires on a dynamic event such as a button click