It seems this was fixed upstream for KDE Frameworks 5. Not sure if we can backport the fix because of the compatibility problems mentioned.
This is also mentioned in the porting notes for KDE Frameworks 5.
https://community.kde.org/Frameworks/Porting_Notes#Mime_Types
"The following fake MIME types have been removed and should be replaced as follows:
all/allfiles ➙ application/octet-stream all/all ➙ application/octet-stream+inode/directory uri/{mms,mmst,mmsu,pnm,rtspt,rtsptu} ➙ x-scheme-handler/..."
It seems this was fixed upstream for KDE Frameworks 5. Not sure if we can backport the fix because of the compatibility problems mentioned.
This is also mentioned in the porting notes for KDE Frameworks 5.
https:/ /community. kde.org/ Frameworks/ Porting_ Notes#Mime_ Types
"The following fake MIME types have been removed and should be replaced as follows:
all/allfiles ➙ application/ octet-stream octet-stream+ inode/directory {mms,mmst, mmsu,pnm, rtspt,rtsptu} ➙ x-scheme- handler/ ..."
all/all ➙ application/
uri/