An uncaught Exception was encountered Type: Mpdf\MpdfException

dear team i got that error bellow when i tried to add this ৳ currency symbol and then generated a pdf ,
please help

An uncaught Exception was encountered

Type: Mpdf\MpdfException

Message: Cannot find TTF TrueType font file “FreeSerif.ttf” in configured font directories.

Filename: /siteaddress/vendor/mpdf/mpdf/src/Fonts/FontFileFinder.php

—SNIP—

We don’t need the entire exception
This error will tell you what to do:

Cannot find TTF TrueType font file “FreeSerif.ttf” in configured font directories.

Unfortunately we cannot help you with installing fonts on your server.

what should i do ?
tell me i will ask my hosting providor

On the server the font FreeSerif.ttf missing in the configured font directories

You could ask your host to add that font to the server.