Solution 1 - Modify the formula to accommodate fuzzy dates

This occurs when fuzzy dates are in the report. The code below will change Fuzzy Dates to standard Date fields. Two examples are given below:
Date To
`if len({CnRelSol_1.CnRelSol_1_Date_From} ) = 7 then date("1/"&{CnRelSol_1.CnRelSol_1_Date_From}) elseif len ({CnRelSol_1.CnRelSol_1_Date_From} ) = 4 then date ("1/1/"&{CnRelSol_1.CnRelSol_1_Date_From} ) elseif {CnRelSol_1.CnRelSol_1_Date_From} ="" then date(1950,12,31) else Date ({CnRelSol_1.CnRelSol_1_Date_From})`

Date From
`if len({CnRelSol_1.CnRelSol_1_Date_To} ) = 7 then date("28/"&{CnRelSol_1.CnRelSol_1_Date_To}) elseif len ({CnRelSol_1.CnRelSol_1_Date_To} ) = 4 then date ("31/12/"&{CnRelSol_1.CnRelSol_1_Date_To} ) elseif {CnRelSol_1.CnRelSol_1_Date_To} ="" then date(2050,12,31) else Date ({CnRelSol_1.CnRelSol_1_Date_To})`

Solution 2 - Change the date format from fuzzy to standard (if affecting specific records)

1. Open the affected individual or constituent record
2. Change the date (for example, birth date) from "month/year" to "month/date/year"