One file is not syncing

[beshur]

Hi.

At some point my sync was broken.
One single file was not syncing - nor on save, neither on opening.
I didn't change config and it worked fine before.
Whole project syncs, but not that one file (it exists on remote server for sure).

In Atom devtools have the following:
atom-sync Uncaught (in promise) TypeError: Cannot read property 'indexOf' of undefined at .../packages/atom-sync/lib/helper/config-helper.coffee:35:50

Config looks fine (indentations ok):

remote:
  host: "..."
  user: "..."
  path: "..."
behaviour:
  uploadOnSave: true
  syncDownOnOpen: true
  forgetConsole: false
  autoHideConsole: true
  alwaysSyncAll: false
option:
  deleteFiles: true
  exclude: [
    "vendor"
    "mobile"
    "desktop"
    "ads"
    "minified-assets"
    "minified-assets-prod"
    "node_modules"
    ".sync-config.cson"
    ".atomignore"
    ".editorconfig"
    ".DS_Store"
  ]

Any ideas?