Layout Library Not Working

I was following the tutorial of how to use the layout library: https://www.espruino.com/Bangle.js+Layou­t
I was following the first part of the tutorial to have a basic string of text and wanted to try it out. When I pasted the code in the Web Ide and upload the code to the Bangle.js 1 emulator it gives an error:

Uncaught Error: Function "stringMetrics" not found!
 at line 1 col 147
... b=g.setFont(a.font,a.fsz).stringMetrics(­a.label);a._w=b.wid...
                              ^
in function "txt" called from line 1 col 15
;if(f[a.type](a),a.r&1){var b=a._w;a._w=a._h,a._h=b}a._w=0|Math....
                  ^
in function "c" called from line 1 col 1093
...a.filly)&&(a.filly=1)}};c(a),a.fillx|­|a.filly?(a.w=d,a.h=e,a...
                              ^
in function "update" called from line 1 col 197
....updateNeeded&&this.update();var f={'':function(){},txt:func...
                              ^
in function "render" called from line 7 col 15
layout.render();
              ^

It is also weird because it says there is no errors in layout.
Is there any way I can fix this?

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