Xenforo 2.1 From a stupid rookie question

[JingChen]

I installed the language unexpectedly there is a problem I chose to reset (stupid) because I do not know how to operate, I would like to ask how to restore the template I hope you can help novice thank you very much

 

[JingChen]

 

[sourav]

head up to

{forumurl}/install

login with an Admin account & click Rebuild Master Data.

 

[thomsa]

your database table jingchen_xf_data_registry not have.

 

[fmsc88]

Or create manually the table jingchen_xf_data_registry and retry with the language