Need Help with error could not perform action install for module undefined message

[Antony121]

Hello and thanks in advance for any tips or advice.  Just did a fresh install via ftp of the newest version and I am getting several errors or glitches that are causing gray hairs.  The first is the error message I get when trying to install modules both paid and free "Error could not perform action install for module undefined"  I have been able to successfully install only one module and that was afterpay all others provide the code above.  Can someone please shed some light on what may be the issue and what I need to do to resolve it.  Thank you again