Error identifying the "coding system" of the custom bullets

[AnweshGangula]

I'm trying to setup Emacs from scratch in my Windows system with Emacs. I'm constantly getting below error whenever I try to close the emacs session.

I found this related post in reddit, but unlike that post, I'm getting the error only when closing emacs and not when saving the file.

These default coding systems were tried to encode the following
problematic characters in the buffer ‘ *temp file*’:
  Coding System           Pos  Codepoint  Char
  iso-latin-1-dos       41530  #x25BE     ▾
                        48541  #x25C9     ◉
                        48547  #x25CB     ○
                        48553  #x25CF     ●
                        48559  #x25CB     ○
                          ...             

However, each of them encountered characters it couldn’t encode:
  iso-latin-1-dos cannot encode these: ▾ ◉ ○ ● ○ ● ○ ● •

Click on a character (or switch to this window by ‘C-x o’
and select the characters by RET) to jump to the place it appears,
where ‘M-x universal-argument g a’ will give information about it.

Select one of the safe coding systems listed below,
or cancel the writing with C-g and edit the buffer
   to remove or modify the problematic characters,
or specify any other coding system (and risk losing
   the problematic characters).

  utf-8 gb18030 utf-7 utf-16 utf-16be-with-signature
  utf-16le-with-signature utf-16be utf-16le iso-2022-7bit utf-8-auto
  utf-8-with-signature utf-7-imap utf-8-emacs prefer-utf-8

screenshot of the error

[AnweshGangula]

I have asked this question on Stack Exchange here: https://emacs.stackexchange.com/q/81541/36093