Cannot read property 'lineComments' of undefined Code: -32603

[opsarno]

[Error - 6:24:54 PM] Request textDocument/documentSymbol failed.
  Message: Request textDocument/documentSymbol failed with message: Cannot read property 'lineComments' of undefined
  Code: -32603

This problem occurs when I cut back YAML files from other files for editing.

Exp:

# test comment
- name: xxxxx

Same as #353

[huytn]

and

Error - 3:29:10 PM] Request textDocument/hover failed.
  Message: Request textDocument/hover failed with message: Cannot read property 'lineComments' of undefined
  Code: -32603 

[alexkoepke]

Getting the same issue error when hovering over comments.

[Error - 3:55:15 PM] Request textDocument/hover failed.
  Message: Request textDocument/hover failed with message: Cannot read property 'lineComments' of undefined
  Code: -32603 

[namoshizun]

Having encountered this issue as well after upgrading VSCode to v1.48.2 on Debian.

[Error - 10:22:57 AM] Request textDocument/documentSymbol failed.
  Message: Request textDocument/documentSymbol failed with message: Cannot read property 'lineComments' of undefined
  Code: -32603 

[gchristidis]

I am working on AWS CF yaml docs and i get this message every second and i cant find a way to turn it off, closing the output panel just opens it up again when the next message is displayed. Its very annoying

[Error - 11:00:51 am] Request textDocument/hover failed.
  Message: Request textDocument/hover failed with message: Cannot read property 'lineComments' of undefined
  Code: -32603 

[JPinkney]

This should be fixed in the 0.10.1 release that just went out