can't paste an image

when I paste an image in editor, there is no reaction, and I checked the server's log, the exception like this
and the image file wasn't uplaoded. But everything is ok when I run hexo on windows.

Start by reproducing image pasting in the editor on the affected platform and comparing it with Windows, then inspect the server log exception shown in the attached image. Done means pasted images upload successfully and appear in the editor without the reported exception.

Written by the indexing model from the issue text.