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?
kingsoft
django-cache
reflect
dronekit
ensurepip
activesupport-concern
android-paging-library
flowplayer
spring-repositories
antlr3
multiparty
netbeans-9
uff
halcon
cornerstonejs
nsnotificationcenter
finance
smo
inverse-match
jambi
trestle-admin
live
arcpullr
libssl
signed-integer
phpredis
objective-c-swift-bridge
type-erasure
rtm
ui-codemirror