HttpErrorHandler not found

PHPMaker General Discussion (PHPMaker)
9

Updated as I found the solution in a thread for something else. I hope this helps someone else.

https://discourse.hkvstore.com/t/class-di-containerbuilder-not-found/3150/1 may try:

  1. Delete composer.lock and “vendor” folder in the project folder,
  2. Generate all files (including composer.json) again,
  3. Open a command prompt or PowerShell at the project folder,
  4. Enter “composer -V” to test your composer installation, make sure there is no error message.
  5. Enter “composer update” to update. Then you should see a “vender” folder in the project file. In the “vendor” folder you should see many subfolders and an autoload.php.
  6. In the project folder, you should find a “src” folder, in which you should find the HttpErrorHandler.php.
    If the autoload.php is generated by composer correctly, your app should find the class HttpErrorHandler.