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?
corda-flow
google-apps-for-education
jscrollbar
statsd
tasmota
fluentwait
rtweet
infopath-forms-services
colorama
s3distcp
tabu-search
jsonb-api
gamma
jelly
dynamics-nav-2009
code-generation
apple-id
evaluator
sql-server-json
hellosign-api
readwritelock
nuxt-plugin
lidar-data
sign-extension
findinfiles
polymer
ctl
django-views
texstudio
tracemalloc