Constantly throws an error: (wrong-type-argument number-or-marker-p nil)

[kuba-orlik]

While working on a typescript file, I'm constantly getting an erorr:

Debugger entered--Lisp error: (wrong-type-argument number-or-marker-p nil)
  eglot--sig-info((:label "write(chunk: any, encoding: BufferEncoding, callba..." :parameters [(:label "chunk: any") (:label "encoding: BufferEncoding") (:label "callback?: ((error: Error | null | undefined) => v...")]) nil nil)
  #f(compiled-function (s) #<bytecode -0x18d209164d7ae4c9>)((:label "write(chunk: any, encoding: BufferEncoding, callba..." :parameters [(:label "chunk: any") (:label "encoding: BufferEncoding") (:label "callback?: ((error: Error | null | undefined) => v...")]))
  mapconcat(#f(compiled-function (s) #<bytecode -0x18d209164d7ae4c9>) [(:label "write(chunk: any, callback?: ((error: Error | null..." :documentation (:kind "markdown" :value "The `writable.write()` method writes some data to ...") :parameters [(:label "chunk: any" :documentation (:kind "markdown" :value "Optional data to write. For streams not operating ...")) (:label "callback?: ((error: Error | null | undefined) => v..." :documentation (:kind "markdown" :value "Callback for when this chunk of data is flushed."))]) (:label "write(chunk: any, encoding: BufferEncoding, callba..." :parameters [(:label "chunk: any") (:label "encoding: BufferEncoding") (:label "callback?: ((error: Error | null | undefined) => v...")])] "\n")
  #f(compiled-function (jsonrpc-lambda-elem11) #<bytecode 0x2b0edcbedb89213>)((:activeSignature 0 :activeParameter 0 :signatures [(:label "write(chunk: any, callback?: ((error: Error | null..." :documentation (:kind "markdown" :value "The `writable.write()` method writes some data to ...") :parameters [(:label "chunk: any" :documentation (:kind "markdown" :value "Optional data to write. For streams not operating ...")) (:label "callback?: ((error: Error | null | undefined) => v..." :documentation (:kind "markdown" :value "Callback for when this chunk of data is flushed."))]) (:label "write(chunk: any, encoding: BufferEncoding, callba..." :parameters [(:label "chunk: any") (:label "encoding: BufferEncoding") (:label "callback?: ((error: Error | null | undefined) => v...")])]))
  jsonrpc-connection-receive(#<eglot-lsp-server eglot-lsp-server-1574194df720> (:jsonrpc "2.0" :id 320 :result (:activeSignature 0 :activeParameter 0 :signatures [(:label "write(chunk: any, callback?: ((error: Error | null..." :documentation (:kind "markdown" :value "The `writable.write()` method writes some data to ...") :parameters [(:label "chunk: any" :documentation (:kind "markdown" :value "Optional data to write. For streams not operating ...")) (:label "callback?: ((error: Error | null | undefined) => v..." :documentation (:kind "markdown" :value "Callback for when this chunk of data is flushed."))]) (:label "write(chunk: any, encoding: BufferEncoding, callba..." :parameters [(:label "chunk: any") (:label "encoding: BufferEncoding") (:label "callback?: ((error: Error | null | undefined) => v...")])])))
  jsonrpc--process-filter(#<process EGLOT (streaming-demo/(typescript-ts-mode js-mode js-ts-mode tsx-ts-mode typescript-mode))> "Content-Length: 51\15\n\15\n{\"jsonrpc\":\"2.0\",\"id\":318,\"r...")

I'm not sure how to tackle this. All help greatly appreciated!

[joaotavora]

No idea what version of Eglot you are using. Make sure you're using the latest Eglot from GNU devel ELPA