fix: 修复预付款fileList不存在的情况下的报错

app/controller/advance_controller.js

@@ -88,7 +88,7 @@ module.exports = app => {
                 }
             }
             data.auditHistory = auditHistory;
-            data.fileList = await ctx.service.advanceFile.getAdvanceFiles({ vid: ctx.advance.id });
+            data.fileList = await ctx.service.advanceFile.getAdvanceFiles({ vid: ctx.advance.id }) || [];
             return data;
         }