Error enumerating AFCs: no driver available -- fpga_runtime nodes

I am trying to run synthesized FPGA designs on fpga_runtime nodes, and I am getting the following errors either 1) "Error enumerating AFCs: no driver available" or 2) "Error enumerating AFCs: not found".

I've checked with designs that have worked before, as well as on multiple fpga_runtime nodes. Please help, thanks!