[CX]"function null.array_agg@1 is undefined "

Original query issued:
SELECT job_title, array_agg(DISTINCT name) as names FROM default_shadow GROUP BY job_title;

Error:
"msg": "Syntax error: In line 1 >>SELECT job_title, array_agg(DISTINCT name) as names FROM default_shadow GROUP BY job_title;<< Encountered '(' \"(\" at column 28. "

When I remove distinct from array_agg function, I get:
"function null.array_agg@1 is undefined "