Fixes #9673 - treat YAML and JSON lookup keys as strings
(cherry picked from commit 25a7f806ed586bd32ee647f2acd8e5a0224cbbfb)
Fixes #9673 - treat YAML and JSON lookup keys as strings
(cherry picked from commit 25a7f806ed586bd32ee647f2acd8e5a0224cbbfb)