phpactor / language-server

I'm a bit unsure whether this belongs to emacs's emacs-lsp package or here.

I've used emacs' lsp-php package and redefined the server command to use phpactor's lsp server.

In the error, I can see this json is given as input

{
  "jsonrpc": "2.0",
  "method": "initialize",
  "params": {
    "processId": 4543,
    "rootPath": "/home/mikael/workspace/lmt/project/",
    "rootUri": "file:///home/mikael/workspace/lmt/project/",
    "capabilities": {
      "workspace": {
        "applyEdit": true,
        "executeCommand": {
          "dynamicRegistration": true
        }
      },
      "textDocument": {
        "synchronization": {
          "willSave": true,
          "didSave": true,
          "willSaveWaitUntil": true
        },
        "documentSymbol": {
          "symbolKind": {
            "valueSet": [
              1,
              2,
              3,
              4,
              5,
              6,
              7,
              8,
              9,
              10,
              11,
              12,
              13,
              14,
              15,
              16,
              17,
              18,
              19,
              20,
              21,
              22,
              23,
              24,
              25
            ]
          },
          "hierarchicalDocumentSymbolSupport": true
        },
        "formatting": {
          "dynamicRegistration": true
        },
        "codeAction": {
          "dynamicRegistration": true
        },
        "completion": {
          "completionItem": {
            "snippetSupport": true
          }
        }
      }
    },
    "initializationOptions": null
  },
  "id": 1
}

Resulting in this error

[2018-10-23 13:47:29] phpactor.ERROR: Argument 2 passed to Phpactor\LanguageServer\Extension\Core\Initialize::__invoke() must be of the type array, null given, ca

an array is expected as second argument (

language-server/lib/Extension/Core/Initialize.php

Line 40 in f81fd9a

array $initializationOptions = [],

)

I've taken a look at this doc (hopefully the correct place), where we have

	/**
	 * User provided initialization options.
	 */
	initializationOptions?: any;

Not familiar with typescript but afer a quick googling, seems to me setting that property to null is not allowed. Feel free to reopen if you think I'm wrong.

emacs client gives null value for initializationOptions