Sorry, I’m not at my computer right not but can send the logs later, it is v3 and I followed the strapi authentication documentation. Sending a JSON to auth/local with postman containing (matching the created user):
I have since installed a new strapi with same version and it works fine with exactly the same collections input.
There is incompatibility issue between strapi and the new redis version. You need to downgrade it from version 4.0 to 3.1.2. Just add to your dependencies in package.json the following line and reinstall the dependencies