The 0x80020009 Exception Occurred Classic ASP Question

Good Day!

I scoured the net looking for answers about this 0x80020009 'Exception Occurred' error in Classic ASP as it is giving us Error 500 in the logs. Although majority of the answers I've found points to recordsets and all, can you enlighten me further about this?

Checking on the line being pointed by that error message, I came across this line:

fieldValue = trim(recordSet("some_field_name"))

And checking again for the initialization of that recordset, I found this:

sqlQuery = "SELECT * FROM some_table WHERE thisAcctID = '" & Session("thisAcctID") & "'" 
Set recordSet = dbHandler.Execute(sqlQuery)

Can you help me guys figure it out how these two sets of code can give me the 0x80020009 Exception occurred errors?

Thanks in advance!