Kotlin Bootcamp issue: Image not visible. It is showing error.

**Describe the problem**
A clear and concise description of what the problem is.

**In which step of the codelab can this issue be found?**
Step number.

**Steps to reproduce?**
What are the steps to reproduce the problem?

**Versions**
What version of IntelliJ IDEA are you using?

**Additional information**
Add any other context about the problem here.

**codelab:** kotlin-bootcamp
