# Common problems

Find solutions to common integration issues.

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Use the summary below to quickly jump to a specific topic:

- [Missing environment variable](/reference/sdk/hydrogen/troubleshooting/problem/missing-environment-variable): Learn how to set up the required environment variables.
- [Missing Croct context](/reference/sdk/hydrogen/troubleshooting/problem/missing-context): Resolve the error about the missing Croct request context.
- [Missing provider](/reference/sdk/hydrogen/troubleshooting/problem/missing-provider): Learn how to configure the Croct provider.
- [Missing slot content](/reference/sdk/hydrogen/troubleshooting/problem/missing-slot-content): Learn how to provide slot content for server rendering.
- [Missing evaluation result](/reference/sdk/hydrogen/troubleshooting/problem/missing-evaluation-result): Learn how to provide an evaluation result for server rendering.
- [Client logic in SSR](/reference/sdk/hydrogen/troubleshooting/problem/client-logic-ssr): Learn how to use client-side methods in server-rendered code.