Errores desconocidos en Bash/Shell

¡Hola a todos! He tenido unos inconvenientes con mi código, y es que al ejecutarlo desde un tiempo empezó a mostrarme errores que simplemente no sé solucionar. ¿Una manita?

MI CÓDIGO:

#!/bin/bash  #Coded by Krypt0N  items=("https://www.youtube.com/watch?v=UZton86SuOg" "https://www.youtube.com/watch?v=f3XcNskAxp0" "https://www.youtube.com/watch?v=fE84i9D9naA" "https://www.youtube.com/watch?v=gKylgPPzJHk" "https://www.youtube.com/watch?v=iU7oF4OXZSE" "https://www.youtube.com/watch?v=TdlWG29Flow" "https://www.youtube.com/watch?v=SSkDfGa9Bnw" "https://www.youtube.com/watch?v=6F9N-6ITFnA" "https://www.youtube.com/watch?v=DCkJ5lGPqFs")  size=$  {#items[@]} randomindex=$  (($  RANDOM % $  size))  echo -e "\e[1;4;35mIf you want to stop playing press (CTRL + C)"  mpv $  {items[$  randomindex]}  CANCION=$  {items[$  randomindex]}  if [ "$  CANCION" == "https://www.youtube.com/watch?v=UZton86SuOg" ] then     echo       echo -e "\e[91m------------------------------------------------------"         echo -e "\e[1mThis was: Material Girl - Madonna" | lolcat      echo -e "\e[91m------------------------------------------------------"          echo fi  if [ "$  CANCION" == "https://www.youtube.com/watch?v=6F9N-6ITFnA" ] then     echo       echo -e "\e[91m------------------------------------------------------"         echo -e "\e[1mThis was: Da Ya Think I'm Sexy? - Rod Stewart" | lolcat      echo -e "\e[91m------------------------------------------------------"          echo fi  if [ "$  CANCION" == "https://www.youtube.com/watch?v=DCkJ5lGPqFs" ] then     echo       echo -e "\e[91m------------------------------------------------------"         echo -e "\e[1mThis was: Out of Touch - D. Hall & J. Oates" | lolcat      echo -e "\e[91m------------------------------------------------------"          echo fi  if [ "$  CANCION" == "https://www.youtube.com/watch?v=SSkDfGa9Bnw" ] then     echo       echo -e "\e[91m------------------------------------------------------"         echo -e "\e[1mThis was: Brother Louie - Modern Talking" | lolcat      echo -e "\e[91m------------------------------------------------------"          echo fi  if [ "$  CANCION" == "https://www.youtube.com/watch?v=TdlWG29Flow" ] then     echo       echo -e "\e[91m------------------------------------------------------"         echo -e "\e[1mThis was: Cheri Cheri Lady - Modern Talking" | lolcat      echo -e "\e[91m------------------------------------------------------"          echo fi  if [ "$  CANCION" == "https://www.youtube.com/watch?v=iU7oF4OXZSE" ] then     echo       echo -e "\e[91m------------------------------------------------------"         echo -e "\e[1mThis was: Lose Yourself to Dance - Daft Punk" | lolcat      echo -e "\e[91m------------------------------------------------------"          echo fi  if [ "$  CANCION" == "https://www.youtube.com/watch?v=gKylgPPzJHk" ] then     echo       echo -e "\e[91m------------------------------------------------------"         echo -e "\e[1mThis was: Sugar - Maroon 5" | lolcat      echo -e "\e[91m------------------------------------------------------"          echo fi  if [ "$  CANCION" == "https://www.youtube.com/watch?v=fE84i9D9naA" ] then     echo       echo -e "\e[91m------------------------------------------------------"         echo -e "\e[1mThis was: Daddy Cool - Boney M." | lolcat      echo -e "\e[91m------------------------------------------------------"          echo fi  if [ "$  CANCION" == "https://www.youtube.com/watch?v=f3XcNskAxp0" ] then     echo       echo -e "\e[91m------------------------------------------------------"         echo -e "\e[1mThis was: Ma Baker - Boney M." | lolcat      echo -e "\e[91m------------------------------------------------------"          echo fi  if [ "$  CANCION" == "https://www.youtube.com/watch?v=f3XcNskAxp0" ] then     echo       echo -e "\e[91m------------------------------------------------------"         echo -e "\e[1mThis was: Ma Baker - Boney M." | lolcat      echo -e "\e[91m------------------------------------------------------"          echo fi   echo -e "\e[93mDo you wanna listen another song?"  select yn in "Yes" "No"; do     case $  yn in         Yes ) bash MRPop; exit;;           No )           echo -e "\e[94mDo you wanna listen another genre?"                 select yn in "Yes" "No"; do                     case $  yn in                         Yes ) bash MUDATOR.sh; exit;;                         No ) clear; echo "See you later!" | lolcat -a; exit;;                         * ) echo "Please choice a valid option!";;                             esac                                             done;;         * ) echo "Please choice a valid option!";;     esac done 

Los errores se encuentran en la siguiente imagen (en un repositorio de github):https://github.com/Krypt0N-Geek/errors_to_debug/blob/master/Captura%20de%20pantalla%20de%202019-10-01%2020-59-28.png

Cualquier duda, el repositorio completo se encuentra en mi perfil de git y se llama “MUDATOR_gnulinux”. Como extra es un programa que reproduce canciones de youtube utilizando MPV… Gracias!!