fix create request command

internal/database/request.go

@@ -124,6 +124,14 @@ func (s requestService) CreateRequest(r geeksbot.Request) (geeksbot.Request, err
 							completed, completed_at, completed_by, message_id, completed_message)
 						VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10) RETURNING id`
 	var id int64
+	var completedByID sql.NullString
+	if r.CompletedBy == nil {
+		completedByID.String = ""
+		completedByID.Valid = false
+	} else {
+		completedByID.String = r.CompletedBy.ID
+		completedByID.Valid = true
+	}
 	err := s.db.QueryRow(queryString,
 		r.Author.ID,
 		r.Channel.ID,
@@ -132,7 +140,7 @@ func (s requestService) CreateRequest(r geeksbot.Request) (geeksbot.Request, err
 		r.RequestedAt,
 		r.Completed,
 		r.CompletedAt,
-		r.CompletedBy.ID,
+		completedByID,
 		r.Message.ID,
 		r.CompletedMessage).Scan(&id)
 	if err != nil {

internal/exts/requests/requests.go

@@ -95,7 +95,7 @@ func requestCommandFunc(ctx disgoman.Context, args []string) {
 	}
 	_, err = ctx.Send(fmt.Sprintf("%s The admin have recieved your request.\n "+
 		"If you would like to close or add a comment to this request please reference ID `%v`",
-		ctx.Message.Author.Mention, request.ID,
+		ctx.Message.Author.Mention(), request.ID,
 	))
 	if err != nil {
 		discord_utils.SendErrorMessage(ctx, "There was an error sending the message. The request was created.", err)