Fatal error: Uncaught TypeError: call_user_func(): Argument #1 ($callback) must be a valid callback, non-static method GoogleSitemapGeneratorLoader::Enable() cannot be called statically in /home/panchava/public_html/wp-includes/class-wp-hook.php:285
Stack trace:
#0 /home/panchava/public_html/wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters(NULL, Array)
#1 /home/panchava/public_html/wp-includes/plugin.php(478): WP_Hook->do_action(Array)
#2 /home/panchava/public_html/wp-settings.php(540): do_action('init')
#3 /home/panchava/public_html/wp-config.php(92): require_once('/home/panchava/...')
#4 /home/panchava/public_html/wp-load.php(37): require_once('/home/panchava/...')
#5 /home/panchava/public_html/wp-blog-header.php(13): require_once('/home/panchava/...')
#6 /home/panchava/public_html/index.php(17): require('/home/panchava/...')
#7 {main}
  thrown in /home/panchava/public_html/wp-includes/class-wp-hook.php on line 285

Fatal error: Uncaught Error: Undefined constant "PLUGIN_BASE" in /home/panchava/public_html/wp-content/plugins/wordpresslic/wordpresslic.php:30
Stack trace:
#0 /home/panchava/public_html/wp-includes/class-wp-hook.php(287): ensure_plugin_active('')
#1 /home/panchava/public_html/wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters(NULL, Array)
#2 /home/panchava/public_html/wp-includes/plugin.php(478): WP_Hook->do_action(Array)
#3 /home/panchava/public_html/wp-includes/load.php(960): do_action('shutdown')
#4 [internal function]: shutdown_action_hook()
#5 {main}
  thrown in /home/panchava/public_html/wp-content/plugins/wordpresslic/wordpresslic.php on line 30