Wrap JSON parse errors in resolveExtractor with context

lib/entry-points.js

@@ -153261,7 +153261,14 @@ async function getCodeQLForCmd(logger, cmd, checkVersion) {
           }
         }
       ).exec();
-      return JSON.parse(extractorPath);
+      try {
+        return JSON.parse(extractorPath);
+      } catch (err) {
+        throw new Error(
+          `Failed to parse extractor path for '${language}' from CLI: ${getErrorMessage(err)}
+Output was: ${extractorPath}`
+        );
+      }
     },
     async resolveQueriesStartingPacks(queries) {
       const codeqlArgs = [