Deprecated function: range(): Passing null to parameter #2 ($end) of type string|int|float is deprecated

Problem/Motivation

Deprecated function: range(): Passing null to parameter #2 ($end) of type string|int|float is deprecated in __TwigTemplate_c3409b517ecc8798025baac944e38cf9->doDisplay() (Zeile 55 in /vendor/twig/twig/src/Environment.php(420) : eval()'d code).

Steps to reproduce

Try adding a layout based on DrowlLayoutsMultiColumnLayout which thereby uses:

  /**
   * Returns the number of columns in this layout.
   *
   * !! Special case: the number is not clearly defined in this workaround class
   * !! here so we return NULL as special case.
   *
   * @var int
   */
  protected $columnCount = NULL;

and does NEVER override that value (like 2 / 3 col do - which are unaffected.

Proposed resolution

Do not show the setting that renders
templates/settings_preview/drowl-layouts-settings-preview-cell-width.html.twig

if columnCount is NULL

Remaining tasks

User interface changes

API changes

Data model changes