Common syntax error in CQL
Space key is a reserve word
Click here for the list of reserve word
Steps to Reproduce
Create a new space with space key “IS”
Edit the home page and create a CQL Search Macro with the following CQL
space = $$space.key$$
You will get this error message
Syntax error in CQL : space = IS
Fix
Add quote-marks to the reserve words
space = "$$space.key$$"