I created a new controller with a new route. I dump generate my new fos_js-routes.json with this command : php bin/console fos:js-routing:dump My new json was
american-fuzzy-lop
coordinator-layout
fieldeditor
maven-jar-plugin
spring-data-gemfire
nextuntil
createprocess
tooling
errordocument
do-not-disturb
justmock
get-childitem
microsoft-sync-framework
jstree-search
getnameinfo
oembed
gradle-3.0
microsoft-graph-calendar
idempotent
esquery
voronoi
entity-framework-core-migrations
python-sh
server-application
phantomjs-node
aws-sdk-go-v2
usermanager
gams-math
asm.js
cscore