Can't import files through find unlinked files

[GongSiqiu]

JabRef 5.0-dev--snapshot--2018-11-29--master--37be33450
Linux 4.9.0-8-amd64 amd64
Java 1.8.0_181

• I have tested the latest development version from http://builds.jabref.org/master/ and the problem persists

Steps to reproduce the behavior:

1. Quality
2. find unlinked files
3. scan directory
4. import
   Then the window will disappear and the files are not imported.

Log File

Paste an excerpt of your log file here

[mlep]

JabRef 5.2--2020-09-02--5c9edc9
Linux 4.9.0-13-amd64 amd64
Java 14.0.2

Working for me.
Fixed by PR #6567 ?

[github-actions]

This issue has been inactive for half a year. Since JabRef is constantly evolving this issue may not be relevant any longer and it will be closed in two weeks if no further activity occurs.

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