Shopex 4.85 backend shipping button cannot be solved

No matter which browser you want to change, you cannot press the shipping button.
After troubleshooting, chrome reports An invalid form control with name = 'other _ name' is not focusable.
This shows that js checks a control in addition to the problem.
On the core \ admin \ view \ order \ orderconsign.html page, row 31st:
 
<Span id = 'otherinput' style = "display: none "> <input type =" text "class = '_ x_ipt' vtype = 'text' required = 'true' size = '10' name = 'other _ name'> </span>

 

This Code hides a required field.
I don't know what this field does. This sentence becomes:
 
<Span id = 'otherinput' style = "display: none "> <input type =" text "class = '_ x_ip' vtype = 'text' required = 'true' size = '10' name = 'other _ name' value = 'null'/> </span>

 

 

At least yes ....

From: lingxiao sentences do not like to write programs