Only compile-time constants may be passed to log(String); use one of the formatting log methods with a constant format string if at all possible.

Some common fixes include:

• If the argument is a call to String.format(), just unwrap that call: log(String.format("format %s", arg)) becomes log("format %s", arg).
• If the argument is obj.toString(), remove the toString() so that you‘re calling log(Object) instead. It’s equivalent to log("%s", obj).
• If the argument is a parameter, add @CompileTimeConstant to that parameter if possible.
• If the argument is an effectively final local variable that is initialized to a constant value, either explicitly add final to that variable or, if it's only used in this log statement, inline the constant value.
• If the argument is a string concatenation with literal and variable parts, use the equivalent formatting. Instead of log("foo " + bar + " baz"), write log("foo %s baz", bar).
• If the argument is exception.toString() or exception.getMessage(), consider using withCause(exception).log() (with no separate log message) instead.

If none of these work, the easiest workaround is to use "%s" as a format string, i.e. replace log(expr) with log("%s", expr).