Required environment variables are missing

What it means

The environment check of the build failed.

The error happened while installing dependencies or building the project. The new version was not started, the current one keeps running.

Typical causes

• The install or build command exited with an error
• Out of memory or disk space
• The language or package manager version is not the one the project expects

How to fix it on mevcore

Add the variables on the Environment tab; they are usually listed in the lines below.

1. 1 Open the app in the mevcore panel: the Problems card on the overview shows this error and the log line it was found in.
2. It is fixed on the “Environment” tab of the app.
3. 2 After the fix, deploy again. If it fails again, the log ends with [mevcore] lines naming the new error code.
4. 3 The "Ask AI" button next to the error prepares a request for ChatGPT or Claude: the error code, the end of the log without secrets and the app settings.

For an AI assistant

The same in English: paste it together with the log into the AI chat.

mevcore error code: install.env_validation
phase: install and build
diagnosis: Required environment variables are missing
platform hint: The environment check of the build failed. Add the variables on the Environment tab; they are usually listed in the lines below.
platform docs: https://mevcore.com/llms-full.txt

Related errors

• runtime.env_validation Required environment variables are missing
• install.env_file_missing The file <file> the command reads variables from is missing
• runtime.env_file_missing The file <file> the command reads variables from is missing
• runtime.database_env_names The application looks for its database at the default address (localhost)