Dear Expert this is the MATLAB program for the Detrended fluctuation analysis for a text. There is an error still at 'fluctuation = zeros(1,k); % corrected error here' when running the program on matlab ONLINE I get the following:

(There are a few errors in the provided code, which are causing the program to fail. Here's the corrected code:) Sorry as you can see above at the exclamation mark the error still persist can you figure it out please.Else you've done an amazing job .Thank you very much .still this issue is persisting.It is saying "ERROR USING ZEROS SIZE INPUTS MUST BE SCALAR. "BUT WHY IS IT SAYING THiS x and K are both vectors hmm .

%% Import the text from the file "Taking Responsibility for Your Own Actions pdf.docx"

filename = "Taking Responsibility for Your Own Actions pdf.docx";

str = extractFileText(filename);

% Preprocess the text by removing punctuation and converting all characters to lowercase

str1 = erasePunctuation(str);

% Split the text into individual words

str2=split(str1);

%Length of word

k=length(str2);

%Number of words

x=[1:k];

% Map each word to its corresponding index of length

for i=x:k

k(i) = strlength(str2(i));

end

y = k;

%Plot the random walk time series

figure(1)

plot(x,y)

title('Time Series Plot (Number of Letters against Position of Words)')

xlabel('Position of words')

ylabel('Number of letters')

grid on

numpts=20;

llimit=2;

rlimit=6;

lgboxlength=linspace(llimit,rlimit,numpts);

boxlength= floor(10.^lgboxlength);

%% Calc Fluctuation for each Boxlength s and calc Fsquared

for j= 1:numpts

nterms1=boxlength(j);

nboxes=floor(kterms1);

fluctuation = zeros(1,k); % corrected error here HERE THE ERROR IS STILL PERSISTING

trend = zeros(1,k); % added missing initialization

%% Calc Trend in Each box of length s and calc Fsquared

for i=1:nboxes

start =(i-1)*nterms1+1;

finish=i*nterms1;

x=[start:finish];

a=polyfit(x,y(start:finish),1);

trend_segment=a(1)*x+a(2);

trend(start:finish)=trend_segment;

fluctuation(start:finish)=y(start:finish)-trend_segment;

end

f(j)=sqrt(mean(fluctuation .^2));

end

%% plotting the log-log Graph

figure(2) % corrected error here

plot(log10(boxlength),log10(f),'+k-')

title('Detrended Time Series Plot (Number of Letters against Position of Words)')

xlabel('Logarithm of box length')

ylabel('Logarithm of fluctuation')

grid on

Thank you ,pls can you run the program and show me the result as well