Rick A. answered 03/25/19
Experienced SAS Professional
The simple answer, which is possibly not ideal, is to just restart your SAS session.
Alternatively, there are a variety of options for "one size fits all" 1-line code strings you could submit to "close out" the offending issue such as:
*); */; /* ' */ /* " */; %mend; quit; run;
Note that %mend will solve an open %macro definition but will generate an inoffensive log ERROR message otherwise.