How to plot the PDF of Gaussian mixture distribution with 2 components in 1 dimensions

I have a vector of [1x1114] which is represented in the image bellow. I want to fit it to the Gaussian Mixture distribution.

I have followed the steps indicated in this link , and I get

gm =

Gaussian mixture distribution with 2 components in 1 dimensions

Component 1:

Mixing proportion: 0.500000

Mean: 3.3153

Component 2:

Mixing proportion: 0.500000

Mean: -61.5348

The values of Sigma are :

val(:,:,1) =

15.3648

val(:,:,2) =

137.2863

I want to plot the Gaussian mixture PDF but when I do the last step mentioned in the link which is

fsurf(@(x,y)reshape(pdf(gm,[x(:),y(:)]),size(x)),[-10 10])

I get this error

Warning: Error updating FunctionSurface.

The following error was reported evaluating the function in FunctionLine update: X must be a matrix with 1 columns.

Can somebody help me to plot the GM model to fit my data ? thank youu