cairosvg: command not found

Have You tried accessing the binary with the full path?

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On CentOS possible default full paths are:

/usr/bin/cairosvg - from package: python-cairosvg

You may install the required package with command yum install {package}
Error in other languages:
cairosvg: bevel nie gevind nie
cairosvg: comandă negăsită
cairosvg: comando não encontrado
cairosvg: commande introuvable
cairosvg: command not found
cairosvg: käsku ei ole
cairosvg: không tìm thấy lệnh
cairosvg: komanda nerasta
cairosvg: Kommando nicht gefunden.
cairosvg: kommandot finns inte
cairosvg: komut yok
cairosvg: nie znaleziono polecenia
cairosvg: níor aimsíodh an t-ordú
cairosvg: no se encontró la orden
cairosvg: no s'ha trobat l'ordre
cairosvg: opdracht niet gevonden
cairosvg: parancs nem található
cairosvg: perintah tidak ditemukan
cairosvg: príkaz nenájdený
cairosvg: příkaz nenalezen
cairosvg: команда не найдена
cairosvg: командата не е открита
cairosvg: 命令找不到
cairosvg: コマンドが見つかりません