NRE in MostRecentDocumentSymbols

[CMLL]

Environment data

• Language Server version: 0.4.22
• OS and version: Ubuntu 19.04
• Python version (& distribution if applicable, e.g. Anaconda): 2.7.15

Expected behaviour

Completion completes.

Actual behaviour

The error happens when doing regular completion on a file, the logs shows the error related to caching. Tried removing the cache folder in ~/snap/common/.cache/Microsoft but didn't help. Also changed the python.analysis.cachingLevel to None and Library but issue was still showing.

The first traceback shows when the cachingLevel is set to Library, second traceback is when I remove the python.analysis.cachingLevel fromt the options and let it have the default value or None.

Logs

Analysis of models.core.server (User) queued. Dependencies: datetime, dateutil.parser, sqlobject, turbogears, turbogears.identity, turbogears.visit, turbogears.config, urlparse, ipaddress, itertools, models.masterdb, models.core.server_facts, models.core.metric_category, models.core.network_service_discovery, models.core.resource_matcher, models.core.snmp_traps, models.core.custom_incident_filter, models.core.snmp_port_discovery, models.core.countermeasures, models.core.maintenance_period, models.core.delta, models.core.elasticflow, models.core.outage_escalation, models.core.cloud, models.core.monitornode, models.core.availability, tasks.ops, pprint, models.core.dashboard, tasks.monitoring_policy
[Error - 3:19:07 PM] Request textDocument/documentSymbol failed.
  Message: One or more errors occurred. (Object reference not set to an instance of an object.)
  Code: -32000 
   at Microsoft.Python.LanguageServer.Indexing.MostRecentDocumentSymbols.<>c.<GetSymbolsAsync>b__11_0(Task`1 t) in E:\A\_work\8\s\src\LanguageServer\Impl\Indexing\MostRecentDocumentSymbols.cs:line 81
   at System.Threading.Tasks.ContinuationResultTaskFromResultTask`2.InnerInvoke()
   at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, ContextCallback callback, Object state)
--- End of stack trace from previous location where exception was thrown ---
   at System.Threading.Tasks.Task.ExecuteWithThreadLocal(Task& currentTaskSlot, Thread threadPoolThread)
--- End of stack trace from previous location where exception was thrown ---
   at Microsoft.Python.LanguageServer.Implementation.Server.HierarchicalDocumentSymbol(DocumentSymbolParams params, CancellationToken cancellationToken) in E:\A\_work\8\s\src\LanguageServer\Impl\Implementation\Server.Symbols.cs:line 37
   at Microsoft.Python.LanguageServer.Implementation.LanguageServer.DocumentSymbol(JToken token, CancellationToken cancellationToken) in E:\A\_work\8\s\src\LanguageServer\Impl\LanguageServer.cs:line 216

Analysis of models.core.server (User) queued. Dependencies: datetime, dateutil.parser, sqlobject, turbogears, turbogears.identity, turbogears.visit, turbogears.config, urlparse, ipaddress, itertools, models.masterdb, models.core.server_facts, models.core.metric_category, models.core.network_service_discovery, models.core.resource_matcher, models.core.snmp_traps, models.core.custom_incident_filter, models.core.snmp_port_discovery, models.core.countermeasures, models.core.maintenance_period, models.core.delta, models.core.elasticflow, models.core.outage_escalation, models.core.cloud, models.core.monitornode, models.core.availability, tasks.ops, pprint, models.core.dashboard, tasks.monitoring_policy
Create compiled (scraped):  System /home/cllamach/.vscode/extensions/ms-python.python-2019.10.37374-dev/languageServer.0.4.22/System.Globalization.Native.so /home/cllamach/.vscode/extensions/ms-python.python-2019.10.37374-dev/languageServer.0.4.22 
Invalidated cached module /home/cllamach/snap/code/common/.cache/Microsoft/Python Language Server/stubs.v2/Wze56EAsxY7lJj0Ft-F_zT_r3hZrJgsJRF0zH1rz0Fc=/System.Globalization.Native.pyi. Reason: Cached file does not exist
[Error - 3:27:35 PM] Request textDocument/documentSymbol failed.
  Message: One or more errors occurred. (Not a valid Python module: /home/cllamach/.vscode/extensions/ms-python.python-2019.10.37374-dev/languageServer.0.4.22/System.Globalization.Native.so)
  Code: -32000 
   at Microsoft.Python.LanguageServer.Indexing.MostRecentDocumentSymbols.<>c.<GetSymbolsAsync>b__11_0(Task`1 t) in E:\A\_work\8\s\src\LanguageServer\Impl\Indexing\MostRecentDocumentSymbols.cs:line 81
   at System.Threading.Tasks.ContinuationResultTaskFromResultTask`2.InnerInvoke()
   at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, ContextCallback callback, Object state)
--- End of stack trace from previous location where exception was thrown ---
   at System.Threading.Tasks.Task.ExecuteWithThreadLocal(Task& currentTaskSlot, Thread threadPoolThread)
--- End of stack trace from previous location where exception was thrown ---
   at Microsoft.Python.LanguageServer.Implementation.Server.HierarchicalDocumentSymbol(DocumentSymbolParams params, CancellationToken cancellationToken) in E:\A\_work\8\s\src\LanguageServer\Impl\Implementation\Server.Symbols.cs:line 37
   at Microsoft.Python.LanguageServer.Implementation.LanguageServer.DocumentSymbol(JToken token, CancellationToken cancellationToken) in E:\A\_work\8\s\src\LanguageServer\Impl\LanguageServer.cs:line 216

Code Snippet / Additional lnformation

XXX

[jakebailey]

#1405 should have fixed this, but apparently not. Really difficult to figure out what's wrong when the stack traces don't show where the NRE is happening...

[CMLL]

@jakebailey Let me know if there is something I can grab to help you solve the issue.

[MikhailArkhipov]

Request for documentSymbol somehow tunnels through the initialization.

[Info  - 10:14:30 AM] Microsoft Python Language Server version 1.0.0.0
[Info  - 10:14:30 AM] Workspace root: c:\Users\...
Opening document file:///c:/Users...
[Error - 10:14:30 AM] Request textDocument/documentSymbol failed.
  Message: Object reference not set to an instance of an object.
  Code: -32000 
   at Microsoft.Python.LanguageServer.Implementation.Server.HierarchicalDocumentSymbol(DocumentSymbolParams params, CancellationToken cancellationToken) in Implementation\Server.Symbols.cs:line 37
   at Microsoft.Python.LanguageServer.Implementation.LanguageServer.DocumentSymbol(JToken token, CancellationToken cancellationToken) in LanguageServer.cs:line 214

Opening document... means didOpenTextDocument came in.