Gerber .GBL files not importing in V4.7

```
TypeError: Cannot read properties of undefined (reading 'toMesh')
    at gerber2mesh (https://grid.space/lib/kiri/run/worker.js:4958:16192)
    at vn.onmessage.self.onmessage (https://grid.space/lib/kiri/run/worker.js:4958:17133)
```