Hello, when I try to upload a png or svg file I get this error:
Exception encountered, of type "LocalFileLockError"
[XC4uL4ZffggAACRtm4QAAAAC] /wiki/Spezial:Hochladen LocalFileLockError from line 1930 of /afs/.rrz.uni-koeln.de/vol/www/projekt/sarazenen/http/docs/wiki/includes/filerepo/file/LocalFile.php: Could not acquire lock for '330px-Variable_Resistor.png.'
Backtrace:
#0 /afs/.rrz.uni-koeln.de/vol/www/projekt/sarazenen/http/docs/wiki/includes/filerepo/file/LocalFile.php(1165): LocalFile->lock()
#1 /afs/.rrz.uni-koeln.de/vol/www/projekt/sarazenen/http/docs/wiki/includes/upload/UploadBase.php(729): LocalFile->upload(string, string, string, integer, array, boolean, User, array)
#2 /afs/.rrz.uni-koeln.de/vol/www/projekt/sarazenen/http/docs/wiki/includes/specials/SpecialUpload.php(537): UploadBase->performUpload(string, string, boolean, User, array)
#3 /afs/.rrz.uni-koeln.de/vol/www/projekt/sarazenen/http/docs/wiki/includes/specials/SpecialUpload.php(206): SpecialUpload->processUpload()
#4 /afs/.rrz.uni-koeln.de/vol/www/projekt/sarazenen/http/docs/wiki/includes/specialpage/SpecialPage.php(479): SpecialUpload->execute(NULL)
#5 /afs/.rrz.uni-koeln.de/vol/www/projekt/sarazenen/http/docs/wiki/includes/specialpage/SpecialPageFactory.php(577): SpecialPage->run(NULL)
#6 /afs/.rrz.uni-koeln.de/vol/www/projekt/sarazenen/http/docs/wiki/includes/MediaWiki.php(282): SpecialPageFactory::executePath(Title, RequestContext)
#7 /afs/.rrz.uni-koeln.de/vol/www/projekt/sarazenen/http/docs/wiki/includes/MediaWiki.php(735): MediaWiki->performRequest()
#8 /afs/.rrz.uni-koeln.de/vol/www/projekt/sarazenen/http/docs/wiki/includes/MediaWiki.php(509): MediaWiki->main()
#9 /afs/.rrz.uni-koeln.de/vol/www/projekt/sarazenen/http/docs/wiki/index.php(43): MediaWiki->run()
#10 {main}
What is the problem here?
Many Greetings, Adalbert Wrona