Run grunt update, see phetsims/chipper#1148

js/trigTourStrings.ts

@@ -0,0 +1,36 @@
+// Copyright 2020-2021, University of Colorado Boulder
+
+/**
+ * Auto-generated from modulify, DO NOT manually modify.
+ */
+/* eslint-disable */
+import getStringModule from '../../chipper/js/getStringModule.js';
+import trigTour from './trigTour.js';
+
+type StringsType = {
+  'trig-tour': {
+    'title': string
+  },
+  'angle': string,
+  'cos': string,
+  'degrees': string,
+  'grid': string,
+  'labels': string,
+  'rads': string,
+  'radians': string,
+  'sin': string,
+  'specialAngles': string,
+  'tan': string,
+  'x': string,
+  'y': string,
+  'values': string,
+  'vs': string,
+  'valueUnitPattern': string,
+  'numberPiPattern': string
+};
+
+const trigTourStrings = getStringModule( 'TRIG_TOUR' ) as StringsType;
+
+trigTour.register( 'trigTourStrings', trigTourStrings );
+
+export default trigTourStrings;

trig-tour_en.html

@@ -124,7 +124,7 @@
 
   // Module loading in compilation-free (development) mode will be kicked off once strings are loaded.
   // This is done in load-unbuilt-strings.js
-  window.phet.chipper.loadModules = () => loadURL( 'js/trig-tour-main.js', 'module' );
+  window.phet.chipper.loadModules = () => loadURL( '../chipper/dist/trig-tour/js/trig-tour-main.js', 'module' );
 </script>
 </body>
 </html>