René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"0 or null value in filter result breaks DataTable with fixed_rows and fixed_columns","articleBody":"Code to reproduce:\r\n\r\n```python\r\ndf = pd.read_csv('https://raw.githubusercontent.com/plotly/datasets/master/solar.csv')\r\ndash_table.DataTable(\r\n        columns=[{\"name\": i, \"id\": i} for i in df.columns],\r\n        data=df.to_dict(\"rows\"),\r\n        row_selectable=\"single\",\r\n        filter_action=\"native\",\r\n        fixed_rows={'headers': True, 'data': 1},\r\n        fixed_columns={'headers': True, 'data': 1},\r\n)\r\n```\r\n\r\n![Sep-21-2021 15-56-46](https://user-images.githubusercontent.com/52431501/134239067-c7323093-d3d4-44eb-b5b3-06708cbe9a2a.gif)\r\n\r\n![Sep-21-2021 15-56-50](https://user-images.githubusercontent.com/52431501/134239099-15f189b3-4690-45d9-adb3-4d133e67937d.gif)\r\n\r\nTested on:\r\n`dash-table` 5.0.0rc1 and v4.12.0\r\n**Chrome** 94.0.4606.54\r\n**Safari** 14.1.2","author":{"url":"https://github.com/cpascale43","@type":"Person","name":"cpascale43"},"datePublished":"2021-09-21T19:58:34.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/941/dash-table/issues/941"}