Magento 2: Running any command getting error Class MagentoWebapiModelCacheTypeWeb ApiInterceptor does not exist

You need to flush the DI generated and the Redis too, run these commands to do it:

rm -rf generated/*
redis-cli -n 0 flushall
php -r "echo opcache_reset();"
bin/magento setup:di:compile

Please, check that interceptor class on your server:

ls -la generated/code/Magento/Webapi/Model/Cache/Type/Webapi/Interceptor.php

(from Magento root dir.)

In case it has a wrong permissions change it according your needs (usually make it accessible by web-server user is enough).

Another case that interceptor class used somewhere in your code directly (or in third-party extensions) but it must not be used directly. Use grep on your code directory to check it.

Another case is when file totally missed from the Magento (missed base class MagentoWebapiModelCacheTypeWebApi). In that case I'll recommend you to update Magento using composer.