I also have this problem, I would like to ask how to solve!
[4fcd73c1] /index.php/%E7%89%B9%E6%AE%8A:%E4%B8%8A%E4%BC%A0%E6%96%87%E4%BB%B6 MWException from line 1868 of /home/mediawiki/wiki/includes/filerepo/file/LocalFile.php: Could not acquire lock for '78px-Demonic_Blade_Vortex_Effect.png.'
Backtrace:
#0 /home/mediawiki/wiki/includes/filerepo/file/LocalFile.php(1147): LocalFile->lock()
#1 /home/mediawiki/wiki/includes/upload/UploadBase.php(708): LocalFile->upload(string, string, string, integer, array, boolean, User)
#2 /home/mediawiki/wiki/includes/specials/SpecialUpload.php(486): UploadBase->performUpload(string, string, boolean, User)
#3 /home/mediawiki/wiki/includes/specials/SpecialUpload.php(197): SpecialUpload->processUpload()
#4 /home/mediawiki/wiki/includes/specialpage/SpecialPage.php(384): SpecialUpload->execute(NULL)
#5 /home/mediawiki/wiki/includes/specialpage/SpecialPageFactory.php(553): SpecialPage->run(NULL)
#6 /home/mediawiki/wiki/includes/MediaWiki.php(281): SpecialPageFactory::executePath(Title, RequestContext)
#7 /home/mediawiki/wiki/includes/MediaWiki.php(714): MediaWiki->performRequest()
#8 /home/mediawiki/wiki/includes/MediaWiki.php(508): MediaWiki->main()
#9 /home/mediawiki/wiki/index.php(41): MediaWiki->run()
#10 {main}