Improve Function invalid argument number error specifying the affected function name

[ajnavarro]

The following query

select 
    language(blob_content, file_path) as lang, 
    uast_extract(
        uast_xpath(
            uast_xpath(
                uast_mode('annotated', blob_content, lang)
               '//InfixExpression[@role="Add" and @role="Binary" and @role="Operator"]'
            ),
            "//String[@internalRole='leftOperand']"),
            "Value"
        ) as result 
from refs 
NATURAL JOIN commits 
NATURAL JOIN commit_files 
NATURAL JOIN files 
where lang != '' limit 100;

Is failing with ERROR 1105 (HY000): unknown error: expecting 2 arguments for calling this function, 1 received

We should specify the function name on the error at least.