Hi, I'm looking for some help in digging a nextpnr crash :
```
  terminate called after throwing an instance of 'nextpnr_himbaechel::assertion_failure'
    what():  Assertion failure: entry != nullptr (/usr/src/debug/nextpnr-himbaechel-git/nextpnr-himbaechel/common/kernel/base_arch.h:166)
```