Deprecation warning: Your package name blockvotes is invalid, it should have a vendor name, a forward slash, and a package name. The vendor and package name can be words separated by -, . or . The complete name should match "[a-z0-9]([.-]?[a-z0-9]+)/a-z0-9". Make sure you fix this as Composer 2.0 will error.
Loading composer repositories with package information
Installing dependencies (including require-dev) from lock file
Nothing to install or update
Generating autoload files
I got error like this