How do I read multiband envi generated image file into matlab?

I am reading the multiband envi generated image file into matlab by using following matlab code;

img_path = 'C:\Image_Data\'

d = uigetdir(pwd, 'Select a folder');

imgfiles = dir(fullfile(d, '*.img'));

for m = 1:length(imgfiles)

img_file = imgfiles(m);

disp(img_file.name);

img = imread(img_file.name);

red = img(:,:,4); % red band

rededge1 = img(:,:,5); % rededge1 band

rededge2 = img(:,:,6); % rededge2 band

rededge3 = img(:,:,7); % rededge3 band

nir = img(:,:,8); % near infrared band

This is giving the following error

>> ds_indices_caf

img_path =

'C:\Image_Data\'

20240309_SAMPLE_DATA.img

Error using imread>get_full_filename

File "20240309_SAMPLE_DATA.img" does not exist.

Error in imread (line 372)

fullname = get_full_filename(filename);

Error in ds_indices_caf (line 17)

img = imread(img_file.name);

>>

I am attaching the envi image file and request to kindly help me out to read the data from the image file.

Deva

[Devendra]

I have kept matlab code and input data in same directory. Now following errors are coming;

>> ds_indices_caf

img_path = 'C:\Data\'

20240309_SAMPLE_DATA.img

Error using imread>get_format_info (line 554)

Unable to determine the file format.

Error in imread (line 395)

fmt_s = get_format_info(fullname);

Error in ds_indices_caf (line 17)

img = imread(img_file.name);

I would appreciate any help to fix it.

Deva