octobercms/october · error · ApplicationException

No definition for column {}

Error message

No definition for column {}

What it means

Error "No definition for column {}" thrown in octobercms/october.

Source

Thrown at modules/backend/widgets/Lists.php:872

    /**
     * getColumns gets all the registered columns for the instance.
     * @return array
     */
    public function getColumns()
    {
        return $this->allColumns ?: $this->defineListColumns();
    }

    /**
     * getColumn gets a specified column object
     * @param  string $column
     * @return mixed
     */
    public function getColumn($column)
    {
        if (!isset($this->allColumns[$column])) {
            throw new ApplicationException('No definition for column ' . $column);
        }

        return $this->allColumns[$column];
    }

    /**
     * isColumnSortable checks if column can be sorted, excluding calculated non visible columns
     */
    protected function isColumnSortable(string $columnName): bool
    {
        if ($this->isColumnVisible($columnName)) {
            return true;
        }

        $column = array_get($this->allColumns, $columnName);
        if (!$column) {
            return false;
        }

View on GitHub (pinned to b608633a7e)

When it happens

Trigger: Thrown at modules/backend/widgets/Lists.php:872 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of octobercms/october@b608633a7e (2026-08-21). Data as JSON: /api/errors/d55333b393ed939e. Report an issue: GitHub.