"using touch command with binary protocol is not recommended with libmemcached" error


#1

My site is broken. It loads an error screen with the heading:

Whoops \ Exception \ ErrorException (E_WARNING)
session_write_close(): using touch command with binary protocol is not recommended with libmemcached versions below 1.0.18, please use ascii protocol or upgrade libmemcached

I don’t know where to start. Google gives me nothing.