Strings with code points over 0xFF may not be mapped into in-memory file handles about academic-writing-check HOT 3 OPEN

(master *):dfc@ronin:~/0xRepos/Writing/Academic-Writing-Check$ md5sum test*
786007dd8085e884e966e726e9451f61  test
b83ef6a5c075ae8078cc88ddd10a0603  test.dh

(master *):dfc@ronin:~/0xRepos/Writing/Academic-Writing-Check$ ./checkwriting test
Use of the encoding pragma is deprecated at ./checkwriting line 12.
Strings with code points over 0xFF may not be mapped into in-memory file handles
Invalid argument at ./checkwriting line 140.

(master *):dfc@ronin:~/0xRepos/Writing/Academic-Writing-Check$ git remote -v
origin  [email protected]:dfc/Academic-Writing-Check.git (fetch)
origin  [email protected]:dfc/Academic-Writing-Check.git (push)
upstream        https://github.com/devd/Academic-Writing-Check.git (fetch)
upstream        https://github.com/devd/Academic-Writing-Check.git (push)
(master *):dfc@ronin:~/0xRepos/Writing/Academic-Writing-Check$ git diff upstream/master
diff --git a/checkwriting b/checkwriting
index 50dd67f..869eb9b 100755
--- a/checkwriting
+++ b/checkwriting
@@ -9,6 +9,7 @@
 use strict ;
 use warnings;
 use Getopt::Long;
+use encoding 'utf8';

 my @switch_list = ('passive','dups','weasel','abbr','typography','strunk','user');
 my %options= map {$_=>1} @switch_list;

$ locale
LANG=en_US.UTF-8
LANGUAGE=
LC_CTYPE="en_US.UTF-8"
LC_NUMERIC="en_US.UTF-8"
LC_TIME="en_US.UTF-8"
LC_COLLATE="en_US.UTF-8"
LC_MONETARY="en_US.UTF-8"
LC_MESSAGES="en_US.UTF-8"
LC_PAPER="en_US.UTF-8"
LC_NAME="en_US.UTF-8"
LC_ADDRESS="en_US.UTF-8"
LC_TELEPHONE="en_US.UTF-8"
LC_MEASUREMENT="en_US.UTF-8"
LC_IDENTIFICATION="en_US.UTF-8"
LC_ALL=