ERR wrong number of arguments

A command has too many or too few arguments.

Redis returns this error when a command has more or fewer arguments than it accepts. The message names the command in lowercase. For a subcommand, it shows both names joined by |, such as 'config|get'.

ERR wrong number of arguments for 'get' command

Example 

> GET
(error) ERR wrong number of arguments for 'get' command
> CONFIG GET
(error) ERR wrong number of arguments for 'config|get' command

How to fix it

  • An argument is missing, or there's one too many. Compare your command with the syntax on its command page, such as GET.
  • Your code passed an empty list. Commands such as DEL, MGET, and HSET need at least one key or field. When your code builds the arguments from a list that turns out to be empty, the command gets no keys at all. Check for an empty list before you send the command.
  • A value with spaces was split into several arguments. In redis-cli, GET my key sends two arguments, my and key. Put quotes around a value that contains spaces: GET "my key".
  • The command is auth, and you passed a username and a password. Servers older than Redis 6 accept only a password. Upgrade the server, or send the password alone.
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