Telegram program

After running the program for sending messages via telegram I am facing this error

Please let me know what should I do

Hi @alok99punj,

Please refer this link Telegram error: bot is not a member of the channel

Do let me know in case you need further assistance,

I have a doubt air how does the bot name affect the program as we use bot api in the code not the bot name

Sir I am unable to identify the use of bot username as we use the bot api please help me out with this project