Error using fprintf Function is not defined for 'cell' inputs

hello everyone.

im trying to save a data into .csv file but i get this error every time i press the save button.

"Error using fprintf

Function is not defined for 'cell' inputs"

CODE:

T = table(app.NEW3,app.NEW1,app.AGE1,app.Gender,app.NEW2,app.GDTT1,app.GDTT2,app.GDTT3,app.GDTT4,app.GDTT5,app.GDTT6,app.AVERAGE);
 fid = fopen('Results.csv','a');
fmt = varfun(@(x) class(x),T,'OutputFormat','cell');
fmt(strcmp(fmt,'double'))={'%g'};
fmt(strcmp(fmt,'cell'))={'%s'};
fmt=[strjoin(fmt,',') '\n'];
for r=1:size(T,1)
  x=table2cell(T(r,:));
  fprintf(fid,fmt,x{:});
end
fclose(fid);

[Jan]

Use the debugger to find the cause of the problem:

dbstop if error

Then run the code again until it stops at the error. Now check:

class(fmt)
class(x)
cellfun(@class, x)

Without your inputs, we cannot run your code and reproduce the problem.

[Oddineus]

I’m using MATLAB app designer.. do you think this could be the case of this problem? Because when I run this code in MATLAB script I don’t receive any error.

[Jan]

@Oddineus: As soon as you post, what you get for the code I've posted, further statements are possible. I asked this because it helps to solve your problem.

[Oddineus]

i got this message

" Error using fprintf

Function is not defined for 'cell' inputs.

Error in Results/SaveandquitButtonPushed (line 197)

fprintf(fid,fmt,x{:});

330 throw(callbackException);

K>> "

also a script called AppManagementService opened up.