Ajax call ORA-01403: NO DATA FOUND - oracle-apex-19.1

Question

I've found out a lot of similar question about this error on stackoverflow, but no one the same of my problem.
I've build a simple page with two Regions. The first region has two select lists and the second Region has a chart who takes data from the select lists. When I open the page, Apex loads every componts Regions, items...
I know in my case that initially my chart hasn't data from the select lists and the select below return 0 rows and I get the error message:"AJAX call ORA-01403: NO DATA FOUND".
When the page has been loaded, I can use the select lists and show value from the chart.
select MSO_DEVICE, nvl((case when MSO_OEE < 100 then 100 else 100 end),0) max_value, nvl((case when MSO_OEE is null
then 0
when MSO_OEE = 0
then 0
else MSO_OEE
end),0) value
FROM MES_OEE
where MSO_DEVICE = :P2_DEVICE
and MSO_DATE = :P2_DATE
order by 2 desc;
I've tryed to set a server condition on Chart region when P2_DEVICE and P2_DATE are null, but in this case the region not appear. In this case I would like to show the region chart with no value or value "0".

Answer 1

I found out a solution for my problem. I hope it'll be helpful for many people.
select
mso_device
, 100 max_value
, coalesce(mso_oee, 0) value
from
(select
mso_device
, mso_oee
from
mes_oee
where
mso_device = :p5_device
and mso_date = to_date(:p5_date, :APP_NLS_DATE_FORMAT)
union all
select
null
, null
from
dual
where
:p5_device is null
or :p5_date is null)
ORDER BY 2 DESC;