DIRS must be forward slashes, even in Windows. Forward slashes do not need escaping, and they are cross Operating System compatible.
The TEMPLATE setting is a list of the template engines used when finding template files and rendering them.
The DIRS key within the TEMPLATE list denotes the directories where the engine should look for template source files.
If we spot this issue in your GitHub pull request we give this advice:
Django Doctor will run this check by default. No configuration is needed but the check can be turned on/off using check code
template-dir-backslash in your pyproject.toml file.