Query on aws rds does not run correctly

[jmizellpolestar]

When running this sql:
select top 50 start_time,
[type] = execution_type_desc,
[queries/s] = sum(count_executions)/ min(interval_mi) /60,
[cpu %] = ROUND(100. * (sum(count_executions*cpu_time_ms) /1000.)
/ ( min(interval_mi) * 60)
/ (SELECT top 1 cpu_count FROM qpi.sys_info)/cores/,1)
from qpi.db_query_plan_exec_stats_history
group by start_time, execution_type_desc
order by start_time desc;

I get this error:
Msg 207, Level 16, State 1, Line 3
Invalid column name 'count_executions'.