Captive Portal helper doesn't start anymore

And gnome-shell doesn't warn about it at all. This is a regression.

gnome-shell-3.30.1-1.fc29.x86_64

$ /usr/libexec/gnome-shell-portal-helper 

(process:30628): Gjs-WARNING **: 11:42:31.632: JS ERROR: ImportError: No JS module 'params' found in search path
@resource:///org/gnome/shell/misc/fileUtils.js:7:7
@resource:///org/gnome/shell/portalHelper/main.js:15:7
@<main>:1:7

** Message: 11:42:31.633: Execution of main.js threw exception: Script <main> threw an exception

Also note that gnome-shell's Gitlab repo is missing a label for portal helper issues, which were triaged in Bugzilla. Could you please re-add the label?