Update PHP 7.1 Same Error

Hi

I have update PHP 7.1 but display in some error. please check

Fatal error: Uncaught Error: Function name must be a string in
/public_html/wp-content/themes/enfold/framework/php/class-style-generator.php:123 Stack trace: #0
/public_html/wp-includes/class-wp-hook.php(298): avia_style_generator->create_styles(”) #1
/public_html/wp-includes/class-wp-hook.php(323): WP_Hook->apply_filters(NULL, Array) #2
/public_html/wp-includes/plugin.php(453): WP_Hook->do_action(Array) #3
/public_html/wp-includes/general-template.php(2574): do_action(‘wp_head’) #4
/public_html/wp-content/themes/enfold/header.php(47): wp_head() #5
/public_html/wp-includes/template.php(684): require_once(‘/home/moneyboat…’) #6
/public_html/wp-includes/template.php(643): load_template(‘/home/moneyboat…’, true) #7
/public_html/wp-includes/general-template.php(45): locate_template(Array, true) #8
/public_html/wp-content/themes/enfold/template-builder.php(12): get in
/public_html/wp-content/themes/enfold/framework/php/class-style-generator.php on line 123