Have you checked this?
https://forum.livehelperchat.com/viewtopic.php?id=1739

The last time I experienced this error I got mysql error 1071 - Specified key was too long; max key length is 1000 bytes The error was gone after I changed the database collation to utf8mb4_unicode_ci It was discussed here. https://stackoverflow.com/questions/8746207/1071-specified-key-was-too-long-...

Currently the navbar links whether in admin page or shop page must be clicked in order to dropdown and display the menu. Here is a CSS trick to dropdown the menu by simply hovering over the navbar link items: .dropdown-menu a:hover { background-color: #ddd; } .dropdown:hover .dropdown-menu { display...

You can add a css style to the file templates/override/static /user.css. Below is an example:

.bm-categories .list-group {
max-height: 200px;
overflow-y: auto;
}


.bm-categories .list-group .list-group-item {
min-height: 50px;
}

This method will probably achieve the same result as you require.
First, make a copy of template_top.php and save it as a override template. Move a line as shown in the picture attached.