How to Magento 2 Invoice Taka Icon Missing

Step 1: vendor/magento/module-sales/Model/Order/Pdf/AbstractPdf.php

Edit 1: Change $drawingString to
$drawingString = mb_convert_encoding($string, "UTF-16BE", "UTF-8");
Edit 2: Change the font name from FreeSerif.ttf to Kalpurush.ttf

Step 2: vendor/magento/zendframework1/library/Zend/Pdf/FileParser.php
Edit 1: Replace “ return iconv('MacRoman', $characterSet, $bytes);” with “return mb_convert_encoding($bytes, $characterSet, 'UTF-8');”

Step 3: lib/internal/GnuFreeFont/
Upload: the font file (Kalpurush.ttf ) in this directory