Error when trying to convert a date to a month name

[Datazen]

I have a date field named 'Date Full'. I'm trying to create a field that displays the month name from the 'Date_Full' but I'm getting an error. The M Code for the step is this:

= Table.AddColumn(#"Removed Errors", "Month_Name", each Date.MonthName(#"Removed Errors",[Date_Full]))

The error is this:

Expression.Error: We cannot convert the value #date(2019, 3, 28) to type Text.
Details:
Value=3/28/2019
Type=Type

Any help on the error is appreciated.

The larger script is pulling 2019 baseball stats for Kevin Pillar from an ESPN data table. the date comes as just 'MMM DD' so I am then appending this with '2019' and then successfully turning this into a date field (this is 'Date _Full'). Then I run into this problem when trying to create a new field named 'Month_Name'. Here is the full M code so far. 'Month_Name' returns errors for each row and this is the last step shown:  

let
Source = Web.Page(Web.Contents("https://www.mlb.com/player/kevin-pillar-607680?stats=gamelogs-r-hitting-mlb&year=2019")),
Data6 = Source{6}[Data],
#"Changed Type" = Table.TransformColumnTypes(Data6,{{"Date", type text}, {"Team", type text}, {"OPP", type text}, {"AB", Int64.Type}, {"R", Int64.Type}, {"H", Int64.Type}, {"TB", Int64.Type}, {"2B", Int64.Type}, {"3B", Int64.Type}, {"HR", Int64.Type}, {"RBI", Int64.Type}, {"BB", Int64.Type}, {"IBB", Int64.Type}, {"SO", Int64.Type}, {"SB", Int64.Type}, {"CS", Int64.Type}, {"AVG", type number}, {"OBP", type number}, {"SLG", type number}, {"HBP", Int64.Type}, {"SAC", Int64.Type}, {"SF", Int64.Type}, {"sort", Int64.Type}}),
#"Added Custom Column" = Table.AddColumn(#"Changed Type", "Custom", each Text.Combine({Date.ToText(Date.From([Date]), "%M"), "/", Date.ToText(Date.From([Date]), "%d"), "/", Date.ToText(Date.From([Date]), "yy"), "19"}), type text),
#"Renamed Columns" = Table.RenameColumns(#"Added Custom Column",{{"Custom", "Date_Full"}}),
#"Changed Type1" = Table.TransformColumnTypes(#"Renamed Columns",{{"Date_Full", type date}}),
#"Removed Errors" = Table.RemoveRowsWithErrors(#"Changed Type1", {"Date_Full"}),
#"Added Custom" = Table.AddColumn(#"Removed Errors", "Month_Name", each Date.MonthName(#"Removed Errors",[Date_Full]))
in
#"Added Custom"

[ImkeF · Accepted solution]

Hi the first argument of the Date.MonthName-function has to be of type date. In your case, you're referencing a table. The second argument is optional, but expects a text-string. That's what triggers the current error-message, because you've referenced a date-value there.

So simply using it like so should do the trick:

Table.AddColumn(#"Removed Errors", "Month_Name", each Date.MonthName([Date_Full]))

[Datazen]

Ah! Thank you! I'm not sure how I missed that! It's working now.