Accessing plans that don't exist causes a stack trace in the logs

@400000004b174940220a1a8c Expression build is undefined on line 48, column 40 in fragments/plan/latestStatus.ftl.
@400000004b174940220a1e74 The problematic instruction:
@400000004b174940220a225c ----------
@400000004b174940220a2644 ==> ${build.currentStatus} [on line 48, column 38 in fragments/plan/latestStatus.ftl]
@400000004b174940220a2e14 ----------
@400000004b174940220a2e14 
@400000004b174940220a31fc Java backtrace for programmers:
@400000004b174940220a5cf4 ----------
@400000004b174940220a60dc freemarker.core.InvalidReferenceException: Expression build is undefined on line 48, column 40 in fragments/plan/latestStatus.ftl.
@400000004b174940220a68ac 	at freemarker.core.TemplateObject.assertNonNull(TemplateObject.java:124)
@400000004b174940220a6c94 	at freemarker.core.TemplateObject.invalidTypeException(TemplateObject.java:134)
@400000004b174940220a7464 	at freemarker.core.Dot._getAsTemplateModel(Dot.java:78)
@400000004b174940220a8404 	at freemarker.core.Expression.getAsTemplateModel(Expression.java:89)
@400000004b174940220a87ec 	at freemarker.core.Expression.getStringValue(Expression.java:93)
@400000004b174940220a8bd4 	at freemarker.core.DollarVariable.accept(DollarVariable.java:76)
@400000004b174940220a8fbc 	at freemarker.core.Environment.visit(Environment.java:209)