Faced this issue and none of the solutions mentioned online actually helped: Using Cake php all my project was working perfectly fine on a local windows machine but not working on a linux server and I was presented with this error:
Missing Helper
Error: HTMLHelper could not be found.
Error: Create the class HTMLHelper below in file: app/View/Helper/HTMLHelper.php
<?php
class HTMLHelper extends AppHelper {
}
Eventually I found out that I wasn't missing any helpers but the issue was in the ctp file and the different ways Linux and Windows read that file. I will write the answer below