Typeerror when loading packages

[GrantM-ed]

Keep getting errors when loading the initial packages...

Getting this problem in V1.1 and in the version uploaded in May 2021. I've reinstalled everything from scratch and my eztrack conda environment is definitely active and includes holoviews and bokeh...

[ZachPenn]

Is this the full error report? If not, it would be helpful to see the full thing. What web browser is this in?

[GrantM-ed]

Is this the full error report? If not, it would be helpful to see the full thing. What web browser is this in?

Hi, sorry this is the full report:

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TypeError Traceback (most recent call last)

in 2 get_ipython().run_line_magic('autoreload', '2') 3 import os ----> 4 import holoviews as hv 5 import numpy as np 6 import pandas as pd ~\miniconda3\envs\ezTrack\lib\site-packages\holoviews\__init__.py in 10 11 from . import util # noqa (API import) ---> 12 from .annotators import annotate # noqa (API import) 13 from .core import archive, config # noqa (API import) 14 from .core.boundingregion import BoundingBox # noqa (API import) ~\miniconda3\envs\ezTrack\lib\site-packages\holoviews\annotators.py in 8 import param 9 ---> 10 from panel.pane import PaneBase 11 from panel.layout import Row, Tabs 12 from panel.util import param_name ~\miniconda3\envs\ezTrack\lib\site-packages\panel\__init__.py in 3 import param as _param 4 ----> 5 from . import layout # noqa 6 from . import links # noqa 7 from . import pane # noqa ~\miniconda3\envs\ezTrack\lib\site-packages\panel\layout.py in 22 from .io.state import state 23 from .util import param_name, param_reprs ---> 24 from .viewable import Layoutable, Reactive 25 26 _row = namedtuple("row", ["children"]) ~\miniconda3\envs\ezTrack\lib\site-packages\panel\viewable.py in 40 41 ---> 42 class Layoutable(param.Parameterized): 43 44 align = param.ObjectSelector(default='start', ~\miniconda3\envs\ezTrack\lib\site-packages\panel\viewable.py in Layoutable() 60 61 css_classes = param.List(default=None, doc=""" ---> 62 CSS classes to apply to the layout.""") 63 64 width = param.Integer(default=None, bounds=(0, None), doc=""" ~\miniconda3\envs\ezTrack\lib\site-packages\param\__init__.py in __init__(self, default, class_, item_type, instantiate, bounds, **params) 1388 Parameter.__init__(self, default=default, instantiate=instantiate, 1389 **params) -> 1390 self._validate(default) 1391 1392 def _validate(self, val): ~\miniconda3\envs\ezTrack\lib\site-packages\param\__init__.py in _validate(self, val) 1396 """ 1397 self._validate_value(val, self.allow_None) -> 1398 self._validate_bounds(val, self.bounds) 1399 self._validate_item_type(val, self.item_type) 1400 ~\miniconda3\envs\ezTrack\lib\site-packages\param\__init__.py in _validate_bounds(self, val, bounds) 1404 return 1405 min_length, max_length = bounds -> 1406 l = len(val) 1407 if min_length is not None and max_length is not None: 1408 if not (min_length <= l <= max_length): TypeError: object of type 'NoneType' has no len() --------------------- This is in chrome Version 91.0.4472.124 (Official Build) (64-bit)

[ZachPenn]

Did you follow the install instructions exactly? Some people have installed ezTrack packages using different package versions and had issues.

[GrantM-ed]

Hi -yes I followed the instructions exactly for the installation of the packages. I ended up moving to another PC which worked fine so I'm closing this, thanks!