Collecting package metadata (repodata.json): done Solving environment: failed ResolvePackageNotFound:

This error message typically occurs when the package manager or installer is unable to find a package that is required for the installation. It could be that the package name is misspelled, or the package is not available in the specified repository or channel.

To resolve this issue, you can try the following steps:

1. Double-check the package name: Ensure that the package name is spelled correctly and matches the package you want to install.

2. Update the package manager: Run `conda update conda` (for Anaconda/Miniconda users) or `pip install --upgrade pip` (for pip users) to update the package manager itself. Then try installing the package again.

3. Check the repository or channel: Make sure that the repository or channel you are using to install the package is correctly configured and accessible. You can try switching to a different repository or channel, if available.

4. Clear the package cache: Sometimes, the package manager cache can become corrupted. Try clearing the cache by running `conda clean -a` (for Anaconda/Miniconda users) or `pip cache purge` (for pip users). Then attempt the installation again.

If none of these steps resolve the issue, it could be that the package you are trying to install is not available for your operating system or Python version. In that case, you may need to look for alternative packages or consult the documentation or support forum for the specific package.