`KeyError` in `ProfileTimePlot.update`

[hendrikmakait]

Aug 11 09:49:57 ip-10-0-12-62 cloud-init[1268]: 2022-08-11 09:49:57,015 - bokeh.core.property.validation - ERROR - 'start'
Aug 11 09:49:57 ip-10-0-12-62 cloud-init[1268]: Traceback (most recent call last):
Aug 11 09:49:57 ip-10-0-12-62 cloud-init[1268]:   File "/opt/conda/envs/coiled/lib/python3.10/site-packages/distributed/utils.py", line 805, in wrapper
Aug 11 09:49:57 ip-10-0-12-62 cloud-init[1268]:     return func(*args, **kwargs)
Aug 11 09:49:57 ip-10-0-12-62 cloud-init[1268]:   File "/opt/conda/envs/coiled/lib/python3.10/site-packages/distributed/dashboard/components/shared.py", line 295, in update
Aug 11 09:49:57 ip-10-0-12-62 cloud-init[1268]:     ts = metadata["keys"][self.key]
Aug 11 09:49:57 ip-10-0-12-62 cloud-init[1268]: KeyError: 'start'
Aug 11 09:49:57 ip-10-0-12-62 cloud-init[1268]: 2022-08-11 09:49:57,015 - tornado.application - ERROR - Exception in callback functools.partial(<bound method IOLoop._discard_future_result of <tornado.platform.asyncio.AsyncIOMainLoop object at 0x7f455b4cd0c0>>, <Task finished name='Task-5714' coro=<ServerSession.with_document_locked() done, defined at /opt/conda/envs/coiled/lib/python3.10/site-packages/bokeh/server/session.py:78> exception=KeyError('start')>)
Aug 11 09:49:57 ip-10-0-12-62 cloud-init[1268]: Traceback (most recent call last):
Aug 11 09:49:57 ip-10-0-12-62 cloud-init[1268]:   File "/opt/conda/envs/coiled/lib/python3.10/site-packages/tornado/ioloop.py", line 741, in _run_callback
Aug 11 09:49:57 ip-10-0-12-62 cloud-init[1268]:     ret = callback()
Aug 11 09:49:57 ip-10-0-12-62 cloud-init[1268]:   File "/opt/conda/envs/coiled/lib/python3.10/site-packages/tornado/ioloop.py", line 765, in _discard_future_result
Aug 11 09:49:57 ip-10-0-12-62 cloud-init[1268]:     future.result()
Aug 11 09:49:57 ip-10-0-12-62 cloud-init[1268]:   File "/opt/conda/envs/coiled/lib/python3.10/site-packages/bokeh/server/session.py", line 95, in _needs_document_lock_wrapper
Aug 11 09:49:57 ip-10-0-12-62 cloud-init[1268]:     result = func(self, *args, **kwargs)
Aug 11 09:49:57 ip-10-0-12-62 cloud-init[1268]:   File "/opt/conda/envs/coiled/lib/python3.10/site-packages/bokeh/server/session.py", line 229, in with_document_locked
Aug 11 09:49:57 ip-10-0-12-62 cloud-init[1268]:     return func(*args, **kwargs)
Aug 11 09:49:57 ip-10-0-12-62 cloud-init[1268]:   File "/opt/conda/envs/coiled/lib/python3.10/site-packages/bokeh/document/callbacks.py", line 450, in wrapper
Aug 11 09:49:57 ip-10-0-12-62 cloud-init[1268]:     return invoke_with_curdoc(doc, invoke)
Aug 11 09:49:57 ip-10-0-12-62 cloud-init[1268]:   File "/opt/conda/envs/coiled/lib/python3.10/site-packages/bokeh/document/callbacks.py", line 408, in invoke_with_curdoc
Aug 11 09:49:57 ip-10-0-12-62 cloud-init[1268]:     return f()
Aug 11 09:49:57 ip-10-0-12-62 cloud-init[1268]:   File "/opt/conda/envs/coiled/lib/python3.10/site-packages/bokeh/document/callbacks.py", line 449, in invoke
Aug 11 09:49:57 ip-10-0-12-62 cloud-init[1268]:     return f(*args, **kwargs)
Aug 11 09:49:57 ip-10-0-12-62 cloud-init[1268]:   File "/opt/conda/envs/coiled/lib/python3.10/site-packages/bokeh/document/callbacks.py", line 179, in remove_then_invoke
Aug 11 09:49:57 ip-10-0-12-62 cloud-init[1268]:     return callback()
Aug 11 09:49:57 ip-10-0-12-62 cloud-init[1268]:   File "/opt/conda/envs/coiled/lib/python3.10/site-packages/distributed/dashboard/components/shared.py", line 316, in <lambda>
Aug 11 09:49:57 ip-10-0-12-62 cloud-init[1268]:     self.doc().add_next_tick_callback(lambda: self.update(prof, metadata))
Aug 11 09:49:57 ip-10-0-12-62 cloud-init[1268]:   File "/opt/conda/envs/coiled/lib/python3.10/site-packages/bokeh/core/property/validation.py", line 95, in func
Aug 11 09:49:57 ip-10-0-12-62 cloud-init[1268]:     return input_function(*args, **kwargs)
Aug 11 09:49:57 ip-10-0-12-62 cloud-init[1268]:   File "/opt/conda/envs/coiled/lib/python3.10/site-packages/distributed/utils.py", line 805, in wrapper
Aug 11 09:49:57 ip-10-0-12-62 cloud-init[1268]:     return func(*args, **kwargs)
Aug 11 09:49:57 ip-10-0-12-62 cloud-init[1268]:   File "/opt/conda/envs/coiled/lib/python3.10/site-packages/distributed/dashboard/components/shared.py", line 295, in update
Aug 11 09:49:57 ip-10-0-12-62 cloud-init[1268]:     ts = metadata["keys"][self.key]
Aug 11 09:49:57 ip-10-0-12-62 cloud-init[1268]: KeyError: 'start'

(https://cloud.coiled.io/dask-engineering/clusters/48635/details)