[REQUIRED] Describe your environment

• Operating System version: Windows 10
• Browser version: Chrome
• Firebase SDK version: 6.14.10
• Firebase Product: Firestore

[REQUIRED] Describe the problem/steps to reproduce:

I get an error message when running a query with the not equal comparison combined with an order by on another field:

Invalid query.... You have a where filter with an inequality (<, <=, >, or >=) on field 'myDocField' and so you must also use 'myDocField' as your first argument to Query.orderBy(), but your first orderBy() is on field 'someOtherDocField' instead.

I believe the error message need to be updated to include the "!=" symbol.

#### Relevant Code:

 My query is like this:

myQuery = myReference.where("myDocField", "!=", 0).orderBy("someOtherDocField").get(); //throws error

while this doesn't throw the error:

myQuery = myReference.where("myDocField", "!=", 0).orderBy("myDocField").orderBy("someOtherDocField").get(); //allowed