Traceback (most recent call last):


 "D:\Anaconda\envs\mmaction2-master\lib\sre_parse.py", line 1015, in parse_template

this = chr(ESCAPES[this][1])
KeyError: '\\U'

ERROR:ui:Traceback (most recent call last):


 "/tmp/alot/alot/ui.py", line 723, in apply_command

cmd.apply(self)


 "/tmp/alot/alot/commands/thread.py", line 624, in apply

mt.reassemble()


 "/tmp/alot/alot/widgets/thread.py", line 176, in reassemble

self._maintree._treelist = self._assemble_structure()


 "/tmp/alot/alot/widgets/thread.py", line 211, in _assemble_structure

mainstruct.append((self._get_source(), None))


 "/tmp/alot/alot/widgets/thread.py", line 247, in _get_source

sourcetxt = self._message.get_email().as_string()


 "/usr/lib/python3.8/email/message.py", line 968, in as_string

return super().as_string(maxheaderlen=maxheaderlen, policy=policy)


 "/usr/lib/python3.8/email/message.py", line 158, in as_string

g.flatten(self, unixfrom=unixfrom)


 "/usr/lib/python3.8/email/generator.py", line 116, in flatten

self._write(msg)


 "/usr/lib/python3.8/email/generator.py", line 189, in _write

msg.replace_header('content-transfer-encoding', munge_cte[0])


 "/usr/lib/python3.8/email/message.py", line 558, in replace_header

raise KeyError(_name)
KeyError: 'content-transfer-encoding'
