How to use gocv normalize function - opencv

Question

I’m having troubles with gocv function Normalize. that in the documentation goes like that.
func Normalize(src Mat, dst *Mat, alpha float64, beta float64, typ NormType)
I’m calling this at my code and get a segmentation error in response. Can you help me fix this call?
package main
import (
“./imageprocessing”
“gocv.io/x/gocv”
// “fmt”
)
/** CovarFlags
// CovarScrambled indicates to scramble the results.
CovarScrambled CovarFlags = 0
// CovarNormal indicates to use normal covariation.
CovarNormal CovarFlags = 1
// CovarUseAvg indicates to use average covariation.
CovarUseAvg CovarFlags = 2
// CovarScale indicates to use scaled covariation.
CovarScale CovarFlags = 4
// CovarRows indicates to use covariation on rows.
CovarRows CovarFlags = 8
// CovarCols indicates to use covariation on columns.
CovarCols CovarFlags = 16
**/
func main() {
var size int
var normtype gocv.NormType = gocv.NormMinMax
size = imageprocessing.FolderLength("./imageprocessing/Images/danger")
Images := make([]gocv.Mat,size)
GLCMs := make([]gocv.Mat,size)
normalizedGLCMs := make([]gocv.Mat,size)
means := make([]gocv.Mat,size)
imageprocessing.ReadFolder(Images,"./imageprocessing/Images/danger",true,false,false)
//GroupGLCM(Images []gocv.Mat, GLCMs []gocv.Mat, means []gocv.Mat, show bool)
imageprocessing.GroupGLCM(Images, GLCMs, means, false)
//func Normalize(src Mat, dst *Mat, alpha float64, beta float64, typ NormType)
//min value of dst is alpha and max value of dst is beta
for i := 0; i < size; i++ {
gocv.Normalize(GLCMs[i], &normalizedGLCMs[i], 0.0, 255.0, normtype )
//imageprocessing.ShowImage("normalizedGLCMs", normalizedGLCMs[i], 100)
}