Google Visualization Charts API examples are broken, how to fix them?

Seems to be a bad release (v44). Until it is fixed, the workaround is to explicitly specify previous version of the API to load instead of using current:

-     google.charts.load('current', {'packages':['gantt']});
+     google.charts.load('43', {'packages':['gantt']});

Please note that this will indeed freeze your charts version and you will not get new features and bugfixes unless you will revert the changes.

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