No tradeable dates for this security

The error message "No data loaded for ABFS R735QTJ8XC9X because there were no tradeable dates for this security" indicates that the algorithm is attempting to access data for a security that doesn't have any available trading data within the specified date range. Here's how you can address this issue:

1. Verify the Dates: Ensure that the start and end dates set in your algorithm are within the trading period for the security. You can use the SetStartDate and SetEndDate methods to define these dates.

2. Check Security Listing: Confirm that the security "ABFS" was listed and actively traded during the specified date range. If it wasn't, you may need to adjust the date range or choose a different security.

3. Market and Resolution Settings: Make sure that the market and resolution settings in the AddEquity method are appropriate for the security. The default resolution is Resolution.Minute, but you can adjust it to Resolution.Daily or another suitable resolution.

4. Logging: Implement logging to capture more detailed information about the algorithm's execution and any exceptions related to data loading. This can help you identify where the issue occurs.

5. Alternative Security: If the security has no trading data for the specified period, consider selecting a different security that has available data.

Here's a basic example of how you might set up your algorithm with these considerations:

class MyAlgorithm(QCAlgorithm):
    def initialize(self):
        self.set_start_date(2020, 1, 1)  # Adjust start date as needed
        self.set_end_date(2020, 12, 31)  # Adjust end date as needed
        self.add_equity("ABFS", resolution=Resolution.Daily)  # Adjust resolution if necessary

    def on_data(self, data):
        if not data:
            self.log("No data available for this slice")
            return

        # Your trading logic here

By following these steps, you should be able to resolve the error and ensure your algorithm runs smoothly. If the issue persists, you may need to verify the availability of historical data for the security in question.

Sources: Using Data - QuantConnect.com, US Equities - QuantConnect.com, History Requests - QuantConnect.com, Requesting Data - QuantConnect.com, Futures Fast Trend Following, with Trend Strength

How to make sure algorithm to continue despite this below error