Below is the code to reproduce the error.

package Homepage;

use strict;
use warnings;
use diagnostics;

require "MRlib.pl";  #this script has logic for AUTOLOAD written, wher
+e it checks for main package and method name and call for require<br/
+>
## Upon using below require it works, otherwise, it throws Use of inhe
+rited AUTOLOAD for non-method FP::Introduction::Introduce() is no lon
+ger allowed at test_autoload.pl line 17. error

## require "C:\\Users\\xxx\\Documents\\Application\\Perl_upgrade\\test
+_autoload\\SUBS\\App\\Introduction.pl";

BEGIN {
    
    *AUTOLOAD = \&FP::AUTOLOAD;
}

print "I started the program\n";

#Below Introduce sub is written in "C:\\Users\\xxx\\Documents\\Applica
+tion\\Perl_upgrade\\test_autoload\\SUBS\\App\\Introduction.pl" script

&FP::Introduction::Introduce;    
print "I got to the end of the program\n";


1;
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