make init craps itself

user@thefurrycollective:~/Downloads/sf64 $ make init
find: ‘asm/us/rev1’: No such file or directory
find: ‘asm/us/rev1’: No such file or directory
rm -f torch.hash.yml
Removing build/
warning: could not open directory 'src/assets/': No such file or directory
find: ‘asm/us/rev1’: No such file or directory
Decompressing ROM...
Provided ROM is big endian.
DMA table found at 0xDE480
Detected ROM version is US 1.1
Found 64 files.
find: ‘asm/us/rev1’: No such file or directory
Unifying yamls...
Extracting...
Traceback (most recent call last):
  File "/home/user/Downloads/sf64/tools/splat/split.py", line 3, in <module>
    import src.splat as splat
  File "/home/user/Downloads/sf64/tools/splat/src/splat/__init__.py", line 9, in <module>
    from . import util as util
  File "/home/user/Downloads/sf64/tools/splat/src/splat/util/__init__.py", line 1, in <module>
    from . import cache_handler as cache_handler
  File "/home/user/Downloads/sf64/tools/splat/src/splat/util/cache_handler.py", line 5, in <module>
    from ..segtypes.common.segment import Segment
  File "/home/user/Downloads/sf64/tools/splat/src/splat/segtypes/__init__.py", line 1, in <module>
    from . import linker_entry as linker_entry
  File "/home/user/Downloads/sf64/tools/splat/src/splat/segtypes/linker_entry.py", line 9, in <module>
    from .segment import Segment
  File "/home/user/Downloads/sf64/tools/splat/src/splat/segtypes/segment.py", line 7, in <module>
    from intervaltree import Interval, IntervalTree
ModuleNotFoundError: No module named 'intervaltree'
make[1]: *** [Makefile:463: extract] Error 1
make: *** [Makefile:421: init] Error 2