Error parsing column (":") in script row

[DragosC]

I have a pipeline for a nodejs and I need to pick up the version and add it as a tag to my newly built docker. To do this, I have a script something like this:

- step: &build-docker-and-push
    name: Build docker image and repo upload
    services:
      - docker
    caches:
      - node
      - docker
    script:
      - IMAGE="333333333333.dkr.ecr.af-xxxxxxx-1.amazonaws.com/node-js-repo"
      - VERSION="$( cat package.json | grep version | head -1 | aws -F: '{ print $2 }' | sed 's/[",]//g' | tr -d '[[:space:]]' )"
      - TAG="${VERSION}-${BITBUCKET_COMMIT}"

The error I receive when I want to start the pipeline is something like this:

There is a YAML syntax error in your bitbucket-pipelines.yml at [line 44, column 94]. To be precise: expected a comment or a line break, but found s(115)

and the line 45 is the `VERSION=...` - column may differ as this is a cleanned line. However, no matter how I format it, how I am trying to build the line, it always complains at my column (`-F:` sequence). I tried to build the line with `` and is the same.

If I randomly put a ":" sign in - let's say - next line, or whatever other similar line, is fine. 

Not sure what I am doing wrong here. I tried to escape it, the ":" is inside the quota so it should not be considered as part of key ... 

Can someone please point me where I should look at?

Thanks.