Error installing plugin

[meetgyn]

How to install the plugin for Firefox in Kali Linux?
I can not install it.

[Tuhinshubhra]

Install plugin? I'm not sure what you mean. Could you elaborate what you are trying to do and what's the issue you're facing.

[meetgyn]

How does this application work? Does he need some plugin?
When I open it at 127.0.0.1:13337 Me appears a screen asking to install plugin, so I do not know which plugin would be

[Tuhinshubhra]

Can you show me where exactly it asked you to install plugin.