I am trying to get all slides, but I have an error: {"message":"%fieldName is a required field.","parameters":{"fieldName":"criteria"}} when I call this API: /V1/jeffSliderSlide/search: Any help ? My code is: /** * @api * @param \Magento\Framework\Api\SearchCriteriaInterface $criteria * @return \Magento\Framework\Api\SearchResultsInterface */ public function getList(\Magento\Framework\Api\SearchCriteriaInterface $criteria) { $searchResults = $this->searchResultsFactory->create(); $searchResults->setSearchCriteria($criteria); $collection = $this->slideCollectionFactory->create(); foreach ($criteria->getFilterGroups() as $filterGroup) { $fields = []; $conditions = []; foreach ($filterGroup->getFilters() as $filter) { $condition = $filter->getConditionType() ? $filter->getConditionType() : 'eq'; $fields[] = $filter->getField(); $conditions[] = [$condition => $filter->getValue()]; } if ($fields) { $collection->addFieldToFilter($fields, $conditions); } } $searchResults->setTotalCount($collection->getSize()); $sortOrders = $criteria->getSortOrders(); if ($sortOrders) { /** @var SortOrder $sortOrder */ foreach ($sortOrders as $sortOrder) { $collection->addOrder( $sortOrder->getField(), ($sortOrder->getDirection() == SortOrder::SORT_ASC) ? 'ASC' : 'DESC' ); } } $collection->setCurPage($criteria->getCurrentPage()); $collection->setPageSize($criteria->getPageSize()); $objects = []; foreach ($collection as $objectModel) { $objects[] = $objectModel; } $searchResults->setItems($objects); return $searchResults; }