Could not load dynamic library 'cudart64_101.dll'; dlerror: cudart64_101.dll not found

This error message typically occurs when the NVIDIA CUDA Toolkit is not installed on your system or the path to the CUDA Toolkit is not set correctly.

To resolve this issue, you should first check if the CUDA Toolkit is installed on your system. If not, you can download and install it from the NVIDIA website.

If you have already installed the CUDA Toolkit, you should check if the path to the CUDA Toolkit is set correctly. To do this, you can add the path to the CUDA Toolkit to your system's PATH environment variable.

Here are the steps to add the CUDA Toolkit path to your system's PATH environment variable:

1. Open the Start menu and search for "Environment Variables".
2. Click on "Edit the system environment variables".
3. Click on the "Environment Variables" button.
4. Under "System Variables", scroll down and double-click on the "Path" variable.
5. Click on the "New" button and add the path to the CUDA Toolkit installation directory (e.g., C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v10.1\bin).
6. Click "OK" to close all windows.

After adding the CUDA Toolkit path to your system's PATH environment variable, restart your application and the error should be resolved.