• Create a Twitter App
• Now, time to create a Twitter App at the Twitter developer panel. Go to the Twitter developer panel and log in with your Twitter account. If you are not registered with the Twitter developer account then you need to register for this. Because twitter recently updates its developer account policies so you need to follow those. After successful registration, you are eligible to create an app.
• Create an App Right Menu > Projects & Apps > Overview > Add App

Note: if your account is first time create, It is Create Project and fill in some info about your site to enter Create an App

• Choose Production mode

• Enter app name

• Copy API key, API key secret, and Bearer token, go to App settings

• Scroll to the bottom of the page and setup User Authentication Settings

• Select OAuth 1.0a, OAuth 2.0 (or and Type of App)

• Add Permissions for OAuth 1.0a