Gvim crash when use python-support plugin, like LeaderF, Vim-Pandoc

When I execute ":Leaderf -h" in Gvim, it prompts the crash dialog box(check the screenshot), Vim-Pandoc has the same problem, but other plugin without python-support has no such problem.

Another strange thing is:

I have uninstalled the python-3.7.2, but execute ":echo has('python3')" still returns 1. Why?

--
--
You received this message from the "vim_use" maillist.
Do not top-post! Type your reply below the text you are replying to.
For more information, visit http://www.vim.org/maillist.php

---
You received this message because you are subscribed to the Google Groups "vim_use" group.
To unsubscribe from this group and stop receiving emails from it, send an email to vim_use+unsubscribe@googlegroups.com.
For more options, visit https://groups.google.com/d/optout.