What you did is correct.
For the specific error with graphicsmagick I have submitted a PR 3 month ago, but has been never merged (I really don’t know why).
You can check and apply it I believe :
What you did is correct.
For the specific error with graphicsmagick I have submitted a PR 3 month ago, but has been never merged (I really don’t know why).
You can check and apply it I believe :