Ruby can't eliminate garbled characters

If you print Japanese in Ruby script, you will receive a Syntax Error.

I guess it's probably a character code problem, but all of them have UTF-8 configured and
There seems to be no problem and it's stuck.
If you know how to deal with it, I would like to ask you a question.

■ [ruby] p "a" Output

get_tdnet_data.rb:10:Invalid char`\x1B'in expression
get_tdnet_data.rb:10:syntax error, unexpected'(', expecting end-of-input
p "$" (B"

■[console]ruby --version Output

 ruby 2.6.2p47 (2019-03-13 revision 67232) [x86_64-linux]

■[ruby] puts_ENCODING__ Output

UTF-8

■ [vi]: set enc? Output

encoding=utf-8

■ [Term] Setup>Terminal
receiving:UTF-8
sending:UTF-8

■[CentOS7]localectlOutput Results

System Locale:LANG=ja, UTF-8
       VC Keymap:jp106
      X11 Layout:jp

■[CentOS7]redhat-release Output

CentOS Linux release 7.6.1810 (Core)