Fatal Error on “All events page”

I have a fatal error when using TEC plugin on the “All events” page.

Fatal error: Uncaught Error: [] operator not supported for strings in /var/www/wp-content/plugins/wp-simple-post-view/includes/postSimplePostView.php:61 Stack trace: #0 /var/www/wp-includes/class-wp-hook.php(292): NGD_wpSimplePostView->ngd_insertProcessPostviewFun() #1 /var/www/wp-includes/class-wp-hook.php(316): WP_Hook->apply_filters() #2 /var/www/wp-includes/plugin.php(484): WP_Hook->do_action() #3 /var/www/wp-includes/general-template.php(3009): do_action() #4 /var/www/wp-content/themes/cloux/header.php(9): wp_head() #5 /var/www/wp-includes/template.php(730): require_once(‘/var/www/wp-con…’) #6 /var/www/wp-includes/template.php(676): load_template() #7 /var/www/wp-includes/general-template.php(48): locate_template() #8 /var/www/wp-content/themes/cloux/page.php(5): get_header() #9 /var/www/wp-includes/template-loader.php(106): include(‘/var/www/wp-con…’) #10 /var/www/wp-blog-header.php(19): require_once(‘/var/www/wp-inc…’) #11 /var/www/index.php(17): require(‘/var/www/wp-blo…’) #12 {main} thrown in /var/www/wp-content/plugins/wp-simple-post-view/includes/postSimplePostView.php on line 61

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