There can be various causes, but your file path makes me suspect that it might have something to do with the fact that your 'local' files are on a shared/network file segment. Maybe your client isn't allowed to lock files on this share.
But see https://www.mediawiki.org/wiki/Manual:Disabling_file_lock_manager
DJ
On Thu, Jan 3, 2019 at 4:55 PM awrona@uni-koeln.de wrote:
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
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