The useState hook was placed after the isLoading/error early returns,
violating the Rules of Hooks. First render hit the early return without
calling the hook; second render (after data loaded) called it, producing
'more hooks than previous render' — React error #310 and a white screen.
Moved const [showTemplateModal] to the state block at the top of the
component, alongside the other useState declarations.
kitos
5e748dbf80