Introduction:
Are you facing difficulties installing applications with Brew on your macOS system? If you’ve encountered the error message “Failed to download resource ‘git–html’,” don’t worry! In this article, we will explore the possible causes and provide you with practical solutions to overcome this issue. Follow the steps below to resolve the problem and get back to smoothly installing your desired applications using Brew.
Understanding the Error Message
What does the error message mean? Content: When you attempt to install an application using Brew, the error message “Failed to download resource ‘git–html'” indicates that there was an issue with downloading the necessary resource files for the installation process. This error commonly occurs due to SSL certificate problems or outdated system versions.
Troubleshooting Steps
Step 1 – Updating macOS Content: Before proceeding with the troubleshooting steps, it’s essential to ensure that your macOS system is up to date. Outdated versions of macOS can lead to compatibility issues with certain formulae in Brew. Consider updating your operating system to the latest version recommended by Apple.
Step 2 – Importing the CA Certificate Content: If updating macOS didn’t resolve the issue, the next step is to import the CA certificate presented by the webserver from which the resource files are being downloaded. Follow these instructions:
- Open a web browser and navigate to the URL from the SSL certificate error message. For example, in our case, it’s “https://mirrors.edge.kernel.org/pub/software/scm/git/git-htmldocs-2.28.0.tar.xz“.
- Download the certificate file from the website. It is usually provided in a .crt or .pem format.
- Locate the downloaded certificate file on your system.
- Double-click on the certificate file. This will open the Keychain Access application on your Mac.
- In the Keychain Access window, you will be prompted to import the certificate. Choose the system keychain and click “Add.”
- Authenticate with your administrator password when prompted.
Step 3 – Retrying the Installation Content: After importing the CA certificate, retry the installation process using Brew. The error message should no longer appear, and the installation should proceed smoothly. If you encounter any other issues, proceed to the next step.
Step 4 – Additional Troubleshooting Content: If the error persists, consider the following additional troubleshooting steps:
- Check for unexpected header files: Run the command “brew doctor” to identify any unexpected header files. Removing these files might help resolve the issue.
- Clear Brew’s cache: Use the command “brew cleanup” to clear Brew’s cache. This can sometimes resolve conflicts or errors related to cached files.
- Verify Ruby installation: If you are experiencing issues installing Ruby as well, ensure that your Ruby installation is set up correctly and matches the requirements for the applications you are trying to install.
Understanding the Error:
When you run the command “brew install <app>” (e.g., “brew install git”) in your terminal, Homebrew attempts to download the necessary resources and dependencies for the application installation. However, in some cases, you may encounter the following error message:
curl: (60) SSL certificate problem: Invalid certificate chain
More details here: http://curl.haxx.se/docs/sslcerts.html
curl performs SSL certificate verification by default, using a “bundle”
of Certificate Authority (CA) public keys (CA certs). If the default
bundle file isn’t adequate, you can specify an alternate file
using the –cacert option.
If this HTTPS server uses a certificate signed by a CA represented in
the bundle, the certificate verification probably failed due to a
problem with the certificate (it might be expired, or the name might
not match the domain name in the URL).
If you’d like to turn off curl’s verification of the certificate, use
the -k (or –insecure) option.
Error: Failed to download resource “git–html”
Download failed: https://mirrors.edge.kernel.org/pub/software/scm/git/git-htmldocs-2.28.0.tar.xz
Possible Causes and Solutions:
- Outdated macOS Version: The error message warns that you are using an old macOS version (e.g., macOS 10.10), which may cause compatibility issues with Homebrew. It is recommended to upgrade your macOS to a newer version to ensure better support for Homebrew and the formulas you want to install.
- SSL Certificate Validation: The error is related to SSL certificate verification. By default, curl verifies the SSL certificate of the server it is connecting to. However, in some cases, the certificate chain may be invalid or not recognized by the default certificate bundle. To overcome this, you can try the following solutions:a. Import the CA Certificate: Download the CA certificate from the server that is presenting the certificate. You can use the OpenSSL command to retrieve the URL of the CA certificate. Once you have the certificate, double-click on it to import it into your Keychain. This will add the CA certificate to the trusted certificates list and may resolve the SSL certificate verification issue.b. Use the “-k” or “–insecure” Option: Another workaround is to use the “-k” or “–insecure” option with curl. This option disables SSL certificate verification, but it should be used with caution as it poses security risks. You can add this option to your .curlrc file, which acts as a curl configuration file, or specify it directly in your terminal command. However, it’s recommended to revert this configuration after resolving the issue.Note: Before using the above solutions, ensure that you trust the source and understand the potential security implications.
- Unexpected Header Files: If you encounter a lengthy list of unexpected header files when running “brew doctor,” it may be related to your problem. In such cases, it is best to clean up your header files by removing unnecessary or conflicting ones. You can refer to the Homebrew documentation or seek guidance from the Homebrew community on how to handle unexpected header files.
Conclusion:
Encountering the “Error: Failed to download resource ‘git–html'” issue while using Homebrew can be frustrating. However, with the solutions mentioned above, you should be able to overcome this problem and continue installing applications seamlessly. Remember to keep your macOS up to date, import the CA certificate if necessary, and use caution when modifying SSL certificate verification settings. If you’re still facing issues, don’t hesitate to seek help from the Homebrew community or consult relevant documentation.
