automatically removing rendering file.html causes "Your file was not found"

[AdrienHorgnies]

So using the option let vim_markdown_preview_temp_file=1 causes a "Your file was not found" in the browser.
Obviously the file was deleted a bit too soon. This may be due to my configuration. Here is what I am using atm :

" vim-markdown-preview
let vim_markdown_preview_toggle=0 " <C-p> to open preview
let vim_markdown_preview_temp_file=1 " Automatically removes rendering file.html after usage
let vim_markdown_preview_github=1 " Use github API

But if I remove the third line (Use github API), I don't get this error. I get a blank page as expected (I only have grip installed) and after refreshing I get the "File not found" error which is a normal behavior.

Vim flavour : neovim
browser : Google Chrome
OS : (X)ubuntu 16.04.2x64

Also I had some trouble installing grip. As I missed the option relative to github the first time, I tried reinstalling grip which resulted in some error I had to circumvent using pip install --user grip. I don't think this is causing the problem but I may be wrong.

I'm disabling the auto remove until then.

[azonirunner]

I think this is related to the comment about a slow browser might error. Using grip and calling github could be an issue also. To make this work on a mac with safari I just changed the sleep time from 200m to 1000m in the vim-markdown-preview.vim file:

if g:vim_markdown_preview_temp_file == 1
sleep 1000m
call system('rm vim-markdown-preview.html')
endif

It is slower... but an extra 800m is not throwing off my output too much :)