diff --git a/server/lib/engine/extend.js b/server/lib/engine/extend.js
index d051ff6..f7262f1 100644
--- a/server/lib/engine/extend.js
+++ b/server/lib/engine/extend.js
@@ -145,7 +145,7 @@ function parseJsonObject(node, name) {
 
 function parseTableJsonObject(node, name) {
     let table = new LuaTable();
-    table._fields = parseJsonObject(node.fields);
+    table._fields = parseJsonObject(node.fields) || [];
     table._metatable = parseJsonObject(node.metatable, '__mt');
     table.description = node.description;
     table.link = node.link;
diff --git a/server/providers/format-provider.js b/server/providers/format-provider.js
index 59615b3..8fadcea 100644
--- a/server/providers/format-provider.js
+++ b/server/providers/format-provider.js
@@ -38,9 +38,12 @@ class FormatProvider {
                 text = text.substring(document.offsetAt(range.start), document.offsetAt(range.end));
             }
 
-            let formattedText = fmt.formatText(text, this._formatOptions(opt));
-
-            return [langserver.TextEdit.replace(range, formattedText)];
+            try {
+                let formattedText = fmt.formatText(text, this._formatOptions(opt));
+                return [langserver.TextEdit.replace(range, formattedText)];
+            } catch (err) {
+                return [];
+            }
         });
     }