fix " 'buffer_id(124) is not valid (closed or unsupported file format)' "

[geekyouth]

extensions error, ImportError: No module named 'tables' https://gitmemory.com/issue/timonwong/OmniMarkupPreviewer/138/562414026

{
"renderer_options-MarkdownRenderer": {
"extensions": ["markdown.extensions.tables", "markdown.extensions.fenced_code", "markdown.extensions.codehilite"]
}
}

it works on my sublime version 3.2.2-3211

[NicEnglish]

Worked for me as well with Buffer_id(163) error

Error: 404 Not Found
Sorry, the requested URL 'http://127.0.0.1:51004/view/163' caused an error:

'buffer_id(163) is not valid (closed or unsupported file format)'

NOTE: If you run multiple instances of Sublime Text, you may want to adjust
the server_port option in order to get this plugin work again.

• note the above change was in the User preferences
  This was browser independent on OSX - tested Safari and Brave, same build as above