Typora export pdf but no file created

[Zurich1994]

Windows 10, typora 0.9.98(beta).
I create a md file (even it is empty or a few words), then I save it.
After I export it to pdf and select the save-path and click the save button, nothing happens.
There are no files created.
I check the toggle devtools, it shows:
"""
DevTools failed to load SourceMap: Could not load content for file:///D:/Important/Typora/Typora/resources/app/lib.asar/pdf/pdf-lib.min.js.map:
DevTools failed to load SourceMap: Could not load content for file:///D:/Important/Typora/Typora/resources/app/underscore.js.map:
DevTools failed to load SourceMap: Could not load content for http://typora/app/window/frame.js.map:
DevTools failed to load SourceMap: Could not load content for http://typora/lib/codemirror/mode.min.js.map:
export PDF to C:\Users\Administrator\Desktop\Untitled.pdf
"""

and the typora.log shows:

I don't know why.
I have re-install many times.
Someone can help?

[abnerlee]

duplicate with #4067 ?

[Zurich1994]

#3766
finally worked.