I want to clear all pending_update_count in my bot!
The output of below command :
https://api.telegram.org/botxxxxxxxxxxxxxxxx/getWebhoo
I solved is like this
POST tg.api/bottoken/setWebhook to emtpy "url"
POST tg.api/bottoken/getUpdates
POST tg.api/bottoken/getUpdates with "offset" last update_id appeared before
doing this serveral times
POST tg.api/bottoken/getWebhookInfo
had a look if all away.
POST tg.api/bottoken/setWebhook with filled "url"