diff --git a/README.md b/README.md
index 6b95c8b..8732731 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,14 @@
-# cordova-plugin-wkwebview-file-xhr 3.1.0
+# NOTICE FOR DEVELOPERS USING WKWebView AND MapBox GL JS
+
+This fork fixes the issue that URLs are not correctly escaped. This is specifically an issue for programmers using WKWebView and MapBox GL JS in their Cordova apps.
+
+If you are receiving the error "ERROR: {message: "Bad request"}" after switching to WKWebView, then this is the fix for you!
+
+Unfortunately, Oracle (who developed this plugin originally) aren't accepting pull requests, so a fork is the only option.
+
+See: https://github.com/oracle/cordova-plugin-wkwebview-file-xhr/issues/53
+
+# cordova-plugin-wkwebview-file-xhr 2.1.4
 
 ## About the cordova-plugin-wkwebview-file-xhr
 
diff --git a/src/ios/CDVWKWebViewFileXhr.m b/src/ios/CDVWKWebViewFileXhr.m
index 18884ac..dc6a442 100644
--- a/src/ios/CDVWKWebViewFileXhr.m
+++ b/src/ios/CDVWKWebViewFileXhr.m
@@ -336,7 +336,13 @@ - (void) performNativeXHR:(NSDictionary<NSString *, id> *) body inWebView:(WKWeb
         return sendResult( @{ @"error" : @"Invalid url"});
     }
     
-    NSURL *url = [NSURL URLWithString:urlString];
+    NSURL *url;
+    if ([urlString rangeOfString:@"%"].location == NSNotFound) {
+        url = [NSURL URLWithString:[urlString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
+    } else {
+        urlString = [urlString stringByReplacingOccurrencesOfString:@" " withString:@"%20"];  // BUGFIX: Meteoblue encodes everything except spaces!
+        url = [NSURL URLWithString:urlString];
+    }
     
     if (![url.scheme.lowercaseString isEqualToString:@"http"] && ![url.scheme.lowercaseString isEqualToString:@"https"]) {
         NSString *msg = [NSString stringWithFormat:@"NativeXHR: Invalid url scheme '%@';  only http and https are supported by NativeXHR", url.scheme];