How can i resolve this error?

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        clc;        % Clear the command window.
        close all;  % Close all figures (except those of imtool.)
        clear;      % Erase all existing variables.
        % workspace;  % Make sure the workspace panel is showing.
        fontSize = 22;
        %Load single MRI image
        I = imread('blood.jpg'); 
        % addition of graininess (i.e. noise)
        I_noise = imnoise(I, 'gaussian', 0.09); 
        % the average of 3^2, or 9 values(filters the multidimensional array A with the multidimensional filter h)
         h = ones(3,3) / 3^2; 
         I2 = wiener2(I_noise,h); 
        % Measure signal-to-noise ratio
        img=I;
        img=double(img(:));
        ima=max(img(:));
        imi=min(img(:));
        mse=std(img(:));
        snr=20*log10((ima-imi)./mse)
        % Measure Peak SNR
        [peaksnr, snr] = psnr(I_noise, I);
        fprintf('\n The Peak-SNR value is %0.4f', peaksnr);
        fprintf('\n The SNR value is %0.4f \n', snr);
        fprintf('\n The MSE value is %0.4f \n', mse);
           %Plot original & filtered figure
           subplot(1,2,1), imshow(I_noise), title('Original image') 
           subplot(1,2,2), imshow(I2), title('Filtered image')
            text(size(I,2),size(I,1)+15, ...
              'Gaussian = 0.09', ...
              'FontSize',10,'HorizontalAlignment','right');

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%Error occured:%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Error in wiener2 (line 38) [g, nhood, noise] = ParseInputs(varargin{:});

Error in ps (line 12) I2 = wiener2(I_noise,h);