problem in loading folders

Also I remove duplicate folders by plugin “Advanced Database Cleaner”.
Now, I reinstall MLF plugin and do debug, not neccesary anything before reinstalling?

before I reinstall MLF there are errors lines 182 to 202 of function.php of theme with QueryMonitor:
———————–
$output=rtrim($output, “\s\n\t\r\0\x0B”);
$output=($fix_tag) ? balanceTags($output, true) : $output;
$output .= ($showdot && $ellipsis) ? “…” : “”;
$output=apply_filters($filters_type, $output);
switch($more_tags) {
case(“div”) :
$tag=”div”;
break;
case(“span”) :
$tag=”span”;
break;
case(“p”) :
$tag=”p”;
break;
default :
$tag=”span”;
}

if ($use_link ) {
if($forces_more) {
$output .= ” <” . $tag . ” class=\”more-link\”>ID) . “#more-” . $post->ID .”\” title=\”” . $mlink_title . “\”>” . $more_links_text = !is_user_logged_in() ? $more_links_text : “” . “</” . $tag . “>” . “\n”;
—————————————-

I toke screen shot of 11Error.
How can I send you?

I said before that I change theme to defalut wordpress theme and deactive all plugins, but not solve problem.

lines 923 to 943 of functions.php of new theme
exactly same codes of before theme.

first error in new theme is:
Notice
/
register_sidebar was called incorrectly. No id was set in the arguments array for the “Sidebar 1” sidebar. Defaulting to “sidebar-1”. Manually set the id to “sidebar-1” to silence this notice and keep existing sidebar content. Please see Debugging in WordPress for more information. (This message was added in version 4.2.0.) 1
/
wp-includes/functions.php:4986
register_sidebar()
wp-content/themes/twentytwenty/functions.php:978
/
Core

Hi Peter,
second theme that I used, don’t have any sidebar!!