Deprecated argument notice

There is an error

Notice: has_cap was called with an argument that is deprecated since version 2.0! Usage of user levels by plugins and themes is deprecated. Use roles and capabilities instead.

Changing

function twitter_stream_add_options() {
	add_options_page('Twitter Stream Authorize Page', 'Twitter Stream', 8, 'twitterstreamauth', 'twitter_stream_options_page');
}

to

function twitter_stream_add_options() {
	add_options_page('Twitter Stream Authorize Page', 'Twitter Stream', 'active_plugins', 'twitterstreamauth', 'twitter_stream_options_page');
}

on line 66-68 of the twitter-stream.php will fix it.

https://wordpress.org/plugins/twitter-stream/