Fix: Zsync -> Share this document crashes

plugins/zsync.koplugin/main.lua

@@ -38,6 +38,11 @@ function ZSync:addToMainMenu(menu_items)
                     return self.filemq_client == nil
                 end,
                 callback = function()
+                    local NetworkMgr = require("ui/network/manager")
+                    if not NetworkMgr:isOnline() then
+                        NetworkMgr:promptWifiOn()
+                        return
+                    end
                     if not self.filemq_server then
                         self:publish()
                     else