How to remove #Eerror in query

Hi Guys,

I am creating a new query pulling data from [tbl_Product] and subquery [qry_LatestProductPrice] with outer join to populate all records from [tbl_Product].

[tbl_Product] = ProductID
[qry_LatestProductPrice] = Price

For the blank record in qry_LatestProductPrice, it will display #Error in the Price column.

My question is how to remove the #Error in the blank record or is there any problem with my query.

I have tried IIf(IsNull([Price],0,[Price]) and IIf([Price]=0,0,[Price]) but it is not working.

I hope you guys could help me solve the problem.

Thank you.
tserhung