Generally, In any command we first check for the argument and then check if key exist.
Some of the examples are
```
127.0.0.1:6379> getrange no-key invalid1 invalid2
(error) ERR value is not an integer or out of range
127.0.0.1:6379> setbit no-key 1 invalid
(error) ERR bit is not an integer or out of range
127.0.0.1:6379> xrange no-key invalid1 invalid2
(error) ERR Invalid stream ID specified as stream command argument
```
**Before change**
```
bitcount no-key invalid1 invalid2
0
```
**After change**
```
bitcount no-key invalid1 invalid2
(error) ERR value is not an integer or out of range
```
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