As I cannot see any reference on how to use properly the sysparm_query_category, may I confirm on how did you append the sysparm_query_category in get request?
uicontainerview
webcam
sim-toolkit
compareto
uniform-initialization
react-swipeable-views
gpt-3
exploded
sha
angular-cli-ghpages
offline
imapclient
flexmark
desktop-app-converter
echarts
hail
build-pipeline
blazor-jsinterop
htmlspecialchars
american-fuzzy-lop
nsfilemanager
ctor-initializer
circleci-2.0
sql-date-functions
avasset
react-native-android
linqpad7
systemctl
bindable
autonumeric.js