Fix filter

src/app/pipes/filter.pipe.ts

@@ -13,6 +13,10 @@ export class FilterPipe implements PipeTransform {
 
     text = text.toLowerCase();
 
+    if(Array.isArray(array)) {
+      array = []
+    }
+
     return array.filter(item =>{
       return item[column].toLowerCase().includes(text);
     });