Found a bug in version 1.1: "AssertionError: <EMPTY MESSAGE>" caused by html5parser parsing failure.

[aT0ngMu]

Hi,I Found a bug in version 1.1: "AssertionError: " caused by html5parser parsing failure.The following is the crash stack information:

[1676863707] === Uncaught Python exception: ===
[1676863707] AssertionError: <EMPTY MESSAGE>
[1676863707] Traceback (most recent call last):
[1676863707] File "/home/server1/adashwy/DriverCollections/exp_drivers/pyfuzzgen_drivers/bs4/beautifulsoup_driver/beautifulsoup_driver.py", line 40, in TestOneInput
[1676863707] instance = BeautifulSoup(remaining_data, features=parsers[idx])
[1676863707] File "/home/server1/.local/lib/python3.8/site-packages/bs4/init.py", line 333, in init
[1676863707] self._feed()
[1676863707] File "/home/server1/.local/lib/python3.8/site-packages/bs4/init.py", line 452, in _feed
[1676863707] self.builder.feed(self.markup)
[1676863707] File "/home/server1/.local/lib/python3.8/site-packages/bs4/builder/_html5lib.py", line 99, in feed
[1676863707] doc = parser.parse(markup, **extra_kwargs)
[1676863707] File "/usr/local/lib/python3.8/dist-packages/html5lib/html5parser.py", line 284, in parse
[1676863707] self._parse(stream, False, None, *args, **kwargs)
[1676863707] File "/usr/local/lib/python3.8/dist-packages/html5lib/html5parser.py", line 133, in _parse
[1676863707] self.mainLoop()
[1676863707] File "/usr/local/lib/python3.8/dist-packages/html5lib/html5parser.py", line 242, in mainLoop
[1676863707] new_token = phase.processEndTag(new_token)
[1676863707] File "/usr/local/lib/python3.8/dist-packages/html5lib/html5parser.py", line 2534, in processEndTag
[1676863707] new_token = self.parser.phase.processEndTag(token)
[1676863707] File "/usr/local/lib/python3.8/dist-packages/html5lib/html5parser.py", line 496, in processEndTag
[1676863707] return func(token)
[1676863707] File "/usr/local/lib/python3.8/dist-packages/html5lib/html5parser.py", line 2089, in endTagTable
[1676863707] self.clearStackToTableBodyContext()
[1676863707] File "/usr/local/lib/python3.8/dist-packages/html5lib/html5parser.py", line 2036, in clearStackToTableBodyContext
[1676863707] assert self.parser.innerHTML
[1676863707] AssertionError: <EMPTY MESSAGE>

The following is the testcase that triggers the crash.
testcase.zip