kernel-wasm module loading problems

building kwasm-networking

make -C /lib/modules/4.19.0-6-amd64/build M=/home/wayne/projects/wasmerio/kernel-wasm/networking modules
make[1]: Entering directory '/usr/src/linux-headers-4.19.0-6-amd64'
  CC [M]  /home/wayne/projects/wasmerio/kernel-wasm/networking/ext.o
  LD [M]  /home/wayne/projects/wasmerio/kernel-wasm/networking/kwasm-networking.o
  Building modules, stage 2.
  MODPOST 1 modules
WARNING: "kwasm_resolver_deregister" [/home/wayne/projects/wasmerio/kernel-wasm/networking/kwasm-networking.ko] undefined!
WARNING: "kwasm_resolver_register" [/home/wayne/projects/wasmerio/kernel-wasm/networking/kwasm-networking.ko] undefined!
  CC      /home/wayne/projects/wasmerio/kernel-wasm/networking/kwasm-networking.mod.o
  LD [M]  /home/wayne/projects/wasmerio/kernel-wasm/networking/kwasm-networking.ko
make[1]: Leaving directory '/usr/src/linux-headers-4.19.0-6-amd64'

dmesg output when attempting to load kwasm-networking.ko

[Sat Nov  9 10:33:05 2019] linux-ext-wasm: uapi initialized
[Sat Nov  9 10:33:05 2019] linux-ext-wasm: Module loaded
[Sat Nov  9 10:33:13 2019] kwasm_networking: no symbol version for kwasm_resolver_register
[Sat Nov  9 10:33:13 2019] kwasm_networking: Unknown symbol kwasm_resolver_register (err -22)
[Sat Nov  9 10:33:13 2019] kwasm_networking: no symbol version for kwasm_resolver_deregister
[Sat Nov  9 10:33:13 2019] kwasm_networking: Unknown symbol kwasm_resolver_deregister (err -22)