SerialPort.list no longer takes a callback error

[kf106]

OS: Ubuntu 20.04
Node: 14.19.1
python: 2.7.18
pip: 20.3.4
pyserial: 3.5

Following the install, build and run dev instructions does start the Electron desktop app.

A firmware file can be selected, and terminal reports "partitions CSV file successfully processed"

However, the "select ESP32 board" dropdown has nothing to select, and the following errors occur in the terminal:

┏ Electron -------------------

  Debugger listening on ws://127.0.0.1:5858/3dce3487-711b-4218-9092-0d5978de6973
  For help see https://nodejs.org/en/docs/inspector
  
┗ ----------------------------

┏ Electron -------------------

  (node:740176) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 1): TypeError: app.whenReady is not a function
  (node:740176) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.
  
┗ ----------------------------

┏ Electron -------------------

  Unable to install `vue-devtools`: 
   Error: Exited with code 9
      at ChildProcess.eval (webpack:///./node_modules/cross-unzip/index.js?:38:21)
      at emitTwo (events.js:126:13)
      at ChildProcess.emit (events.js:214:7)
      at Process.ChildProcess._handle.onexit (internal/child_process.js:198:12)
  
┗ ----------------------------

┏ Electron -------------------

  (node:740176) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 2): TypeError: SerialPort.list no longer takes a callback and only returns a promise
  
┗ ----------------------------