Exception when hovering over a function

[icyrockcom]

Hovering over a function name produces this in developer tools console:

shell.ts:443 Connection is closed.: Error: Connection is closed.
    at throwIfClosedOrDisposed (/home/icyrockcom/.vscode/extensions/hoovercj.vscode-ghc-mod-1.2.0/node_modules/vscode-jsonrpc/lib/main.js:371:19)
    at Object.sendRequest (/home/icyrockcom/.vscode/extensions/hoovercj.vscode-ghc-mod-1.2.0/node_modules/vscode-jsonrpc/lib/main.js:400:13)
    at Object.sendRequest (/home/icyrockcom/.vscode/extensions/hoovercj.vscode-ghc-mod-1.2.0/node_modules/vscode-languageclient/lib/main.js:47:73)
    at LanguageClient.doSendRequest (/home/icyrockcom/.vscode/extensions/hoovercj.vscode-ghc-mod-1.2.0/node_modules/vscode-languageclient/lib/main.js:185:31)
    at Object.provideHover (/home/icyrockcom/.vscode/extensions/hoovercj.vscode-ghc-mod-1.2.0/node_modules/vscode-languageclient/lib/main.js:730:30)
    at /usr/share/code/resources/app/out/vs/workbench/node/extensionHostProcess.js:23:351216
    at /usr/share/code/resources/app/out/vs/workbench/node/extensionHostProcess.js:23:63826
    at new n.Class.derive._oncancel (/usr/share/code/resources/app/out/vs/workbench/node/extensionHostProcess.js:23:49058)
    at Object.t.asWinJsPromise (/usr/share/code/resources/app/out/vs/workbench/node/extensionHostProcess.js:23:63789)
    at e.provideHover (/usr/share/code/resources/app/out/vs/workbench/node/extensionHostProcess.js:23:351170)
e.onUnexpectedError @ shell.ts:443
(anonymous) @ shell.ts:403
e.onUnexpectedExternalError @ errors.ts:125
t.onUnexpectedExternalError @ errors.ts:147
(anonymous) @ hover.ts:34
v @ winjs.base.raw.js:1209
enter @ winjs.base.raw.js:901
_run @ winjs.base.raw.js:1068
_error @ winjs.base.raw.js:1041
v @ winjs.base.raw.js:1209
enter @ winjs.base.raw.js:901
_run @ winjs.base.raw.js:1068
_error @ winjs.base.raw.js:1041
(anonymous) @ async.ts:360
done @ winjs.base.raw.js:1378
v @ winjs.base.raw.js:1224
enter @ winjs.base.raw.js:901
_run @ winjs.base.raw.js:1068
_error @ winjs.base.raw.js:1041
e.resolveErr @ ipcRemoteCom.ts:111
f @ ipcRemoteCom.ts:203
_combinedTickCallback @ internal/process/next_tick.js:67
_tickCallback @ internal/process/next_tick.js:98

Nothing in Vscode Output tab.

I have this configured:

  "haskell.ghcMod.executablePath": "stack",
  "haskell.ghcMod.logLevel": "log",

I'm using Linux. Versions of relevant software:

vscode-ghc-mod 1.2.0

ghc-mod version 5.6.0.0 compiled by GHC 8.0.1

vscode:
1.14.0
b8cd5b9556d8b70ea560d35b903422363f6c5c40