The error message “process.env.react_app_api_url undefined” indicates that the variable “react_app_api_url” in the “process.env” object is not defined.
This usually happens when the environment variable is not set or is not accessible in your current environment.
To resolve this issue, you need to make sure that the “react_app_api_url” environment variable is properly set and accessible.
Here’s an example of how you can set the environment variable in different scenarios:
Example 1: Set environment variable in a development environment
If you are developing your application locally, you can set the environment variable either using the command line or by creating a “.env” file in the root directory of your project.
Using command line:
export react_app_api_url=http://example.com/apiUsing .env file:
Create a file named “.env” in the root directory of your project and add the following line:
react_app_api_url=http://example.com/apiExample 2: Set environment variable in a production environment
In a production environment, you usually set environment variables using the hosting provider’s interface or dashboard. The exact steps may vary depending on the provider, but here’s a general outline:
- Locate the settings or configuration section for your hosting provider.
- Find the option to set environment variables.
- Add a new environment variable with the name “react_app_api_url” and the corresponding value, which should be the API URL.
- Save the changes.
Once you have set the environment variable, make sure to restart your application or rebuild it if necessary. The error message should no longer appear if the environment variable is correctly set and accessible.