Checking the "Allow sharing on user-mounted external storages" checkbox does not save (although it says Saved). I refresh the screen and then it is unchecked again.
Info:
installed true
maintenance false
needsDbUpgrade false
version 10.0.3.3
versionstring 10.0.3
edition Community
productname ownCloud
Log:
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{"reqId":"eACDFTBNbBRSHhx3dfHt","level":0,"time":"2017-09-25T17:48:33+00:00","remoteAddr":"78.131.72.90","user":"gkovacsp","app":"core","method":"GET","url":"\/owncloud\/index.php\/core\/preview.png?file=%2F%5Bpi%5D+home%2Fwp.txt&c=5cc931d273693522f79dec3146397072&x=64&y=64&forceIcon=0","message":"Generating preview for \"\/[pi] home\/wp.txt\" with \"OC\Preview\TXT\""}
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