search has javascript error.

[john]

https://patentscope.wipo.int/search/zh/search.jsf
has javascript error, when use chrome go to https://patentscope.wipo.int/search/zh/search.jsf, you will see below error in chrome's console
////////////////////////////////////////////////
Uncaught TypeError: Cannot read property 'length' of undefinedC.extend.initiateGroups @ packed.js:10370(anonymous function) @ search.jsf:519
///////////////////////////////////////////////

you can see above error use chorome's console, or use ie's debug console.