I followed
this tutorial
To upgrade from version 3.2.2 to 3.3.8
And at the end of the update process, the success message appeared.
I removed the Install folder
And the page is blank, error 500
But I had put a file in the info.php folder
and when I put the url/info.php it appears right
After the error I deleted the cache and resent the vendor
Before the update the forum worked normally, with the exception of the search.
I had brought the forum from another hosting, but I didn't bring the contents of the index tables because they were too big.
I've done this procedure before and in the new hosting I had to redo the index and everything was fine.
But this time when giving the command it gave an error,
I couldn't solve it and went to the update.