TypeError: nil is not a symbol nor a string

Error Details:

• Sentry event: https://sentry.io/andrejs-cunskis/dependabot-gitlab/issues/1839297285
• First seen: 2020-08-13T17:17:33+00:00
• Last seen: 2020-08-13T17:17:33+00:00
• Event: 1
• Users: 0