请帮助我解决这些警告，以便提交主题供提交。提前谢谢。

多亏了wordpress，我发现了许多警告并解决了其中的许多问题。stackexchange。com，但仍然无法解决以下问题，请帮助我。

WARNING: Found base64_encode in the file twitteroauth.php. base64_encode() is not allowed.
Line 123: return base64_encode(hash_hmac(\'sha1\', $base_string, $key, true));
Line 203: return base64_encode($signature);

WARNING: Found base64_decode in the file twitteroauth.php. base64_decode() is not allowed.
Line 207: $decoded_sig = base64_decode($signature);

WARNING: file_get_contents was found in the file twitteroauth.php File operations should use the WP_Filesystem methods instead of direct PHP filesystem calls.
Line 277: file_get_contents(self::$POST_INPUT)

WARNING: curl_init was found in the file twitteroauth.php File operations should use the WP_Filesystem methods instead of direct PHP filesystem calls.
Line 1084: $ci = curl_init();

WARNING: curl_exec was found in the file twitteroauth.php File operations should use the WP_Filesystem methods instead of direct PHP filesystem calls.
Line 1110: $response = curl_exec($ci);

REQUIRED: plugin-activation.php. Themes should use add_theme_page() for adding admin pages.
Line 335: add_submenu_page(

REQUIRED: innovative_panel_functions.php. Themes should use add_theme_page() for adding admin pages.
Line 143: add_menu_page(theme_name.\' Settings\', theme_name ,\'install_themes\', \'panel\'

RECOMMENDED: Possible variable $instance found in translation function in plugin-activation.php. Translation function calls must NOT contain PHP variables.
Line 2043: echo \'<p><a href=\'\' . add_query_arg( \'page\', TGM_Plugin_Activation::$instance->menu, admin_url( TGM_Plugin_Activation::$instance->parent_url_slug ) ) . \'\' title=\'\' . esc_attr( TGM_Plugin_Activation::$instance->strings[\'return\'] ) . \'\' target=\'_parent\'>\' . __( TGM_Plugin_Activation::$instance->strings[\'return\'], \'tgmpa\' ) . \'</a><