keytool error: java.io.FileNotFoundException: certificate.p12 <Access is denied>
You tried to use the blackberry-keytool tool to create a self-signed Developer Certificate. The tool does not have permission to write to the location you provided for the output_file.p12 parameter.
Acquire read-write permissions for the folder to which you want to write the P12 file.
Choose another location for your P12 file.
Run blackberry-keytool with superuser permissions.