Broken search results with 3 or more characters in Gnome Shell 3.4.2

The extensions work well until you insert 2 characters, starting from the third one those Exceptions are thrown:

    JS ERROR: !!!   Exception in callback for signal: search-updated
    JS ERROR: !!!     message = '"callback is not a function"'
    JS ERROR: !!!     fileName = '"/home/mornanar/.local/share/gnome-shell/extensions/tracker-search@cewee/extension.js"'
    JS ERROR: !!!     lineNumber = '107'
    JS ERROR: !!!     stack = '"([object Array])@/home/mornanar/.local/share/gnome-shell/extensions/tracker-search@cewee/extension.js:107
([object Object],[object Array],[object Array])@/usr/share/gnome-shell/js/ui/searchDisplay.js:404
wrapper([object Object],[object Array],[object Array])@/usr/share/gjs-1.0/lang.js:213
([object Object],[object Array])@/usr/share/gnome-shell/js/ui/searchDisplay.js:380
wrapper([object Object],[object Array])@/usr/share/gjs-1.0/lang.js:213
_emit("search-updated",[object Array])@/usr/share/gjs-1.0/signals.js:124
([object Object],[object Array])@/usr/share/gnome-shell/js/ui/search.js:356
wrapper([object Object],[object Array])@/usr/share/gjs-1.0/lang.js:213
([object Array])@/home/mornanar/.local/share/gnome-shell/extensions/tracker-search@cewee/extension.js:242
([object Array],[object Array])@/home/mornanar/.local/share/gnome-shell/extensions/tracker-search@cewee/extension.js:250
([object Array])@/usr/share/gnome-shell/js/ui/search.js:391
wrapper([object Array])@/usr/share/gjs-1.0/lang.js:213
("fil")@/usr/share/gnome-shell/js/ui/search.js:365
wrapper("fil")@/usr/share/gjs-1.0/lang.js:213
("fil")@/usr/share/gnome-shell/js/ui/searchDisplay.js:337
wrapper("fil")@/usr/share/gjs-1.0/lang.js:213
()@/usr/share/gnome-shell/js/ui/viewSelector.js:341
wrapper()@/usr/share/gjs-1.0/lang.js:213
"'
    JS ERROR: !!!   Exception in callback for signal: search-completed
    JS ERROR: !!!     message = '"providerResults is undefined"'
    JS ERROR: !!!     fileName = '"/usr/share/gnome-shell/js/ui/searchDisplay.js"'
    JS ERROR: !!!     lineNumber = '385'
    JS ERROR: !!!     stack = '"([object Object],(void 0),[object Array])@/usr/share/gnome-shell/js/ui/searchDisplay.js:385
wrapper([object Object],(void 0),[object Array])@/usr/share/gjs-1.0/lang.js:213
([object Object],[object Array])@/usr/share/gnome-shell/js/ui/searchDisplay.js:434
wrapper([object Object],[object Array])@/usr/share/gjs-1.0/lang.js:213
_emit("search-completed",[object Array])@/usr/share/gjs-1.0/signals.js:124
([object Array])@/usr/share/gnome-shell/js/ui/search.js:417
wrapper([object Array])@/usr/share/gjs-1.0/lang.js:213
("fil")@/usr/share/gnome-shell/js/ui/search.js:365
wrapper("fil")@/usr/share/gjs-1.0/lang.js:213
("fil")@/usr/share/gnome-shell/js/ui/searchDisplay.js:337
wrapper("fil")@/usr/share/gjs-1.0/lang.js:213
()@/usr/share/gnome-shell/js/ui/viewSelector.js:341
wrapper()@/usr/share/gjs-1.0/lang.js:213