Hello,  about this TG-Error.  may try this.

open MT5 - Tools - Options 

tick Allow WebRequest for listed URL : 

https://api.telegram.org

then click OK

This tg-error does not affect the EA's performance in entry and exit, so you can leave it alone. Apart from that, in the new updated version we will remove this TG-Error so that it doesn't give the impression that EA has an error. So you can leave the TG-error or fill it in https://api.telegram.org

i show you with this attach picture.