I have red sentences and warning in terminal of visual studio code.How can I solve that?

Question

I have been learning python from udemy.And I will start to make something with flask.I am using visual studio code program.

from flask import Flask

app=Flask(__name__)

if __name__=="__main__":
    app.run(debug=True)

I have written this and work in terminal.I can do anything which my teacher did.But I have problem that my teacher didn't have in terminal.There are red sentence in terminal and a warning.Actually it doesn't prevent working but I am worried that it will be problem.How can I solve that?

NOTE=warning is Do not use the development server in a production environment.

AND

conda : The term 'conda' is not recognized as the name of a cmdlet, f
unction, script file, or operable program. Check the spelling of the 
name, or if a path was included, verify that the path is correct and 
try again.
At line:1 char:1
+ conda activate base
+ ~~~~~
    + CategoryInfo          : ObjectNotFound: (conda:String) [], Com 
    mandNotFoundException
    + FullyQualifiedErrorId : CommandNotFoundException