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Last Tested: Sep 6, 2019
Problem
This error usually indicates that the {% parameter parameter name %} liquid variable is being used somewhere where it's not accepted.
Solution
Since the _parameter_value variable is accepted in more places than parameter parameter name (notably the html, link, and sql_always_where parameters) it's usually safe to say you can use this instead.
this
sql_always_where: {% if parameter_name._parameter_value == 1 %} ...
instead of this
sql_always_where: {% if parameter parameter_name == 1 %} ...
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