KeyError textDocumentSync when opening Spyder with a project

Description

What steps will reproduce the problem?

• Close Spyder with a project open by clicking the “X” in the top right corner
• Open Spyder. Previous project opens.
• Issue reporter appears before the main window.

Traceback

  File "/home/keoughs/anaconda3/lib/python3.7/site-packages/spyder/plugins/editor/lsp/client.py", line 306, in on_msg_received
    handler(resp['params'])
  File "/home/keoughs/anaconda3/lib/python3.7/site-packages/spyder/plugins/editor/lsp/client.py", line 365, in process_server_capabilities
    if isinstance(server_capabilites['textDocumentSync'], int):
KeyError: 'textDocumentSync'

Versions

• Spyder version: 4.0.0b3
• Python version: 3.7.3
• Qt version: 5.9.6
• PyQt5 version: 5.9.2
• Operating System: Linux 2.6.32-754.14.2.el6.x86_64

Dependencies

pygments >=2.0    :  2.4.2 (OK)
qdarkstyle >=2.6.4:  2.7 (OK)
sphinx >=0.6.6    :  2.1.2 (OK)
psutil >=0.3      :  5.6.3 (OK)
pyls >=0.27.0     :  0.27.0 (OK)
nbconvert >=4.0   :  5.5.0 (OK)
pandas >=0.13.1   :  0.24.2 (OK)
numpy >=1.7       :  1.16.4 (OK)
sympy >=0.7.3     :  1.4 (OK)
cython >=0.21     :  0.29.11 (OK)
qtconsole >=4.5.0 :  4.5.1 (OK)
IPython >=4.0     :  7.6.0 (OK)
matplotlib >=2.0.0:  3.1.0 (OK)
pylint >=0.25     :  2.3.1 (OK)

[Keou0007]

I’ll set up my boot method to enable verbose debugging and grab them next time I see the traceback. It’s less consistent now than it was with beta2, so it might take a few days.

[ccordoba12]

@Keou0007, to generate those logs, you need to start Spyder with the following option from the command line:

spyder --debug-info verbose

Then you can upload here the two log files present in ~/.config/spyder-py3-dev/lsp-logs (i.e. client_python.log and server_python.log).

Thanks for your help!