Use validation_error partial view to display errors on imports' complete view
MODIFY
resources/views/imports/complete.blade.php
resources/views/imports/complete.blade.php
</div>
<div class="row__column">
<input type="text" name="rows[{{ $index }}][happened_on]" value="{{ $row['happened_on'] }}" />
- {{ $errors->first('rows.' . $index . '.happened_on') }}
+ @include('partials.validation_error', ['payload' => 'rows.' . $index . '.happened_on'])
</div>
<div class="row__column row__column--triple">
<input type="text" name="rows[{{ $index }}][description]" value="{{ $row['description'] }}" />
- {{ $errors->first('rows.' . $index . '.description') }}
+ @include('partials.validation_error', ['payload' => 'rows.' . $index . '.description'])
</div>
<div class="row__column">
<input type="text" name="rows[{{ $index }}][amount]" value="{{ $row['amount'] }}" />
- {{ $errors->first('rows.' . $index . '.amount') }}
+ @include('partials.validation_error', ['payload' => 'rows.' . $index . '.amount'])
</div>
</div>
</div>

Use validation_error partial view to display errors on imports' complete view