Difficult to reproduce, but when packaging our project (5200+ files) I now and then get the error below:
error AL0572: I/O operations on the file or folder './Layouts/NVT Orderbook.rdlc' resulted in an exception with the Windows 32 error code '0x000004C8'.
It always refers to 'some' rdlc file (mostly a different one). These rdlc's, neither the parent report objects have been modified before packing / publishing. The files are also not opened. When repackaging / closing VS code, the error mostly does no longer occur.

Thanks @fvet ! We are aware of the problem and we are working on identifying the root cause.
Same problem here, using BC15CU1, AL langauge : 4.0.209944
error AL0572: I/O operations on the file or folder './REPORT/RDLC/R_20490_t.rdlc' resulted in an exception with the Windows 32 error code '0x000004C8'.
project consist of 855 files (not all AL files)
also getting
Error: An internal error has occurred
Nothing in event viewer
FYI, haven't seen the error a long time since using an updated insider AL extension...

FYI, haven't seen the error a long time since using an updated insider AL extension...
Could always try with that version ...
Just wondering how I can get that version, cause I doubt we are an bcinsider
(time to disturb some colleagues! :D)
FYI, haven't seen the error a long time since using an updated insider AL extension...
Could always try with that version ...
Just wondering how I can get that version, cause I doubt we are an bcinsider
(time to disturb some colleagues! :D)
We have access, but using that compiler made it worse ...
The AL server crashed 5 times in the last 3 minutes. The server will not be restarted.
Connection to server got closed. Server will restart.
Unhandled exception. System.TypeInitializationException: The type initializer for 'Microsoft.Dynamics.Nav.Deployment.Telemetry.TelemetryServiceManager' threw an exception.
'Microsoft.Dynamics.Nav.Deployment.Telemetry.TelemetryServiceManager' threw an exception.
---> System.TypeInitializationException: The type initializer for 'Microsoft.ApplicationInsights.Extensibility.Implementation.Tracing.CoreEventSource' threw an exception.
---> System.ArgumentException: External component has thrown an exception.
So doubt it works ... :s
@atoader
for : Error: An internal error has occurred
Log((Windows) has some info:
[2020-01-09 15:59:47.645] [renderer1] [error] Cannot read property 'kind' of null: TypeError: Cannot read property 'kind' of null
at asHoverContent (c:\Users\me.vscode\extensions\ms-dynamics-smb.al-4.0.218468\node_modules\vscode-languageclient\lib\protocolConverter.js:101:27)
at asHover (c:\Users\me.vscode\extensions\ms-dynamics-smb.al-4.0.218468\node_modules\vscode-languageclient\lib\protocolConverter.js:134:31)
I have just encountered the very same bug (as reported by fvet) in AL Language extension version 4.0.206840 while customizing the base application (BC 15.2 on-prem).
Using the current 5.0 version from Marketplace seemed to fix it.