Let's perform some steps to resolve this, matthewsdancer.

You can go back to the deposit page and click Print. Then, please make sure to select the Deposit slip and deposit summary in the Print Deposit window. Once done, click the Preview button in the Print Deposit Slips window.

If you're still unable to print the deposit slip, let's perform a few troubleshooting steps to resolve this. Please see the troubleshooting of PDF and print problems for the detailed steps.

Please see the screenshots I've provided below: 

Let me know if you're able to print the deposit slip. Have a good one!