Help compiling duckdb and error loading postgres: `undefined symbol: _ZTIN6duckdb7CatalogE`

Apologies if this is not the right place to ask for help.

When `LOAD`ing the postgres extension that I compiled myself, I am running into

```
Extension "/home/mzabani/duckdb/build/release/extension/postgres_scanner/postgres_scanner.duckdb_extension" could not be loaded: /home/mzabani/duckdb/build/release/extension/postgres_scanner/postgres_scanner.duckdb_extension: undefined symbol: _ZTIN6duckdb7CatalogE
```

I have `duckdb` cloned and checked out at the `v1.3.2` tag, and `duckdb-postgres` cloned and checked out at c3024b5c8570695dc73422066fcd221ed64761de, which seemed like the best match since the `duckdb` git submodule is also at `v1.3.2`.

I then have the following extension_config.cmake file in the `duckdb` repo (last line might be the actual relevant one):

```cmake
duckdb_extension_load(autocomplete)
duckdb_extension_load(core_functions)
duckdb_extension_load(httpfs SOURCE_DIR /home/mzabani/duck-read-cache-fs/duckdb-httpfs INCLUDE_DIR /home/mzabani/duck-read-cache-fs/duckdb-httpfs/extension/httpfs/include)
duckdb_extension_load(cache_httpfs SOURCE_DIR /home/mzabani/duck-read-cache-fs)
duckdb_extension_load(ducklake SOURCE_DIR /home/mzabani/ducklake)
duckdb_extension_load(icu)
duckdb_extension_load(json)
duckdb_extension_load(parquet)
duckdb_extension_load(postgres_scanner DONT_LINK SOURCE_DIR /home/mzabani/duckdb-postgres)
```

After that I ran `GEN=ninja EXTENSION_CONFIGS="extension_config.cmake" make` to compile.
Is this something obvious I'm missing from the build instructions?

Thanks in advance.