task cancelled error message

Author: Artur Chrusciel

ios/RNFetchBlobRequest.m

@@ -374,7 +374,11 @@ - (void) URLSession:(NSURLSession *)session task:(NSURLSessionTask *)task didCom
     });
 
     if (error) {
-        errMsg = [error localizedDescription];
+        if (error.domain == NSURLErrorDomain && error.code == NSURLErrorCancelled) {
+            errMsg = @"task cancelled";
+        } else {
+            errMsg = [error localizedDescription];
+        }
     }
 
     if (respFile) {