Unity Intellisense Not Working

[vscodebot]

Issue Type: Bug

I'm in various versions of Unity 2019, and suddenly VS Code stopped completing code, and Command-clicking variables does not take me to the definition. When I rollover things, I only see "Loading..." and it never resolves.

VS Code version: Code 1.43.0 (78a4c91400152c0f27ba4d363eb56d2835f9903a, 2020-03-09T19:34:44.548Z)
OS version: Darwin x64 19.3.0

System Info

Item	Value
CPUs	Intel(R) Core(TM) i9-9900K CPU ! 3.60GHz (16 x 3600)
GPU Status	2d_canvas: enabled flash_3d: enabled flash_stage3d: enabled flash_stage3d_baseline: enabled gpu_compositing: enabled metal: disabled_off multiple_raster_threads: enabled_on oop_rasterization: disabled_off protected_video_decode: unavailable_off rasterization: enabled skia_renderer: disabled_off_ok video_decode: enabled viz_display_compositor: enabled_on viz_hit_test_surface_layer: disabled_off_ok webgl: enabled webgl2: enabled
Load (avg)	4, 4, 4
Memory (System)	64.00GB (33.89GB free)
Process Argv
Screen Reader	no
VM	0%

Extensions (3)

Extension	Author (truncated)	Version
unity-code-snippets	kle	1.3.0
csharp	ms-	1.21.14
unity-tools	Tob	1.2.3