Wrapper not work

[sonof1]

Himedia Q5 pro , kodi 18.6
if I set the wrapper player, I have the error "mount failed";
what i don't understand is why in playercorefactory.xml i have

<!--network protocol rules-->
<rule player="VideoPlayer" protocols="nfs|http|rtmp|sop"/>
<!--all nfs-->

it always worked with protocol smb without modification playercorefactory.xml

[sonof1]

Looking at several threads I modified playercorefactory.xml

<rule protocols = "http | https | rtmp | sop" player = "VideoPlayer" /> <! - all http ->
<rule protocols = "nfs | smb" name = "Wrapper" /> <! - all nfs | smb ->

but it doesn't work; it seems that sometimes the line is deleted
<rule protocols = "nfs | smb" name = "Wrapper" /> <! - all nfs | smb ->

sometimes the file