Watched unexpected filepath

[Steve]

Node.js version: v8.10.0 linux x64
gulp-watch version: 4.3.11
Globs: "./app/index.html"
Filepath: /....../app/index.html
Event: add
Process CWD: ......./app
Options:

{
  "events": [
    "add",
    "change",
    "unlink"
  ],
  "ignoreInitial": true,
  "readDelay": 10
}

[Steve]

In my case, this turned out to be a file path issue.