Imported OperationError to TranslateDateTimeFormat

src/core/operations/TranslateDateTimeFormat.mjs

@@ -7,6 +7,7 @@
 import Operation from "../Operation";
 import moment from "moment-timezone";
 import {DATETIME_FORMATS, FORMAT_EXAMPLES} from "../lib/DateTime";
+import OperationError from "../errors/OperationError";
 
 /**
  * Translate DateTime Format operation