net::ERR_SSL_KEY_USAGE_INCOMPATIBLE

[romanpastu]

When trying to make a Post request to localhost using chrome with axios in React, (Windows) I receive the above error.

When trying to make the same Post with postman, it works fine

[kaleidawave]

Also having this issue:

[deidyomega]

Im having the same issue

We are to use rootCA.pem on the server right?

[FiloSottile]

If you are seeing this error, it means you are trying to use the root CA directly. You are NOT supposed to use rootCA.pem directly. Instead, generate a certificate for localhost or example.com with mkcert localhost or mkcert example.com and use that.