Fatal error: Uncaught Exception: DateTime::__construct(): Failed to parse time string

Overview of the issue

The following PHP error appears when you try to update a translation or add a new translation job to the basket by going to WPML → Translation Management:

Fatal error: Uncaught Exception: DateTime::__construct(): Failed to parse time string in …/wp-content/plugins/sitepress-multilingual-cms/classes/jobs/class-wpml-tm-jobs-repository.php on line 155

Workaround

Please be sure of having a full backup of your website before proceeding.

1. Open the wp-content/plugins/sitepress-multilingual-cms/classes/jobs/query/StringQuery.php file.
2. Look for line 49.
3. Replace:

   	public function get_data_query( WPML_TM_Jobs_Search_Params $params ) {
   		$columns = array(
   			'string_translations.id as id',
   			'"' . WPML_TM_Job_Entity::STRING_TYPE . '" as type',
   			'string_status.rid as tp_id',
   			'batches.id as local_batch_id',
   			'batches.tp_id as tp_batch_id',
   			$this->batch_name_column,
   			'string_translations.status as status',
   			'strings.id as original_element_id',
   			'strings.language as source_language',
   			'string_translations.language as target_language',
   			'string_translations.translation_service as translation_service',
   			'string_status.timestamp as sent_date',
   			'NULL as deadline_date',
   			'NULL as completed_date',
   			'strings.value as title',
   			'source_languages.english_name as source_language_name',
   			'target_languages.english_name as target_language_name',
   			'string_translations.translator_id as translator_id',
   			'NULL as translate_job_id',
   			'core_status.tp_revision AS revision',
   			'core_status.ts_status AS ts_status',
   			'NULL AS needs_update',
   			'NULL AS editor',
   			'string_translations.status = ' . ICL_TM_COMPLETE . '  AS has_completed_translation',
   			'NULL AS editor_job_id',
   			'0 AS automatic',
   			'NULL AS review_status',
   			'NULL AS trid',
   			'NULL AS element_type',
   			'NULL AS job_title',
   		);
   
   		return $this->build_query( $params, $columns );
   	}
   

   With:

   	    public function get_data_query( WPML_TM_Jobs_Search_Params $params ) {
           $columns = array(
               'string_translations.id as id',
               '"' . WPML_TM_Job_Entity::STRING_TYPE . '" as type',
               'string_status.rid as tp_id',
               'batches.id as local_batch_id',
               'batches.tp_id as tp_batch_id',
               $this->batch_name_column,
               'string_translations.status as status',
               'strings.id as original_element_id',
               'strings.language as source_language',
               'string_translations.language as target_language',
               'NULL AS trid',
               'NULL AS element_type',
               'string_translations.translation_service as translation_service',
               'string_status.timestamp as sent_date',
               'NULL as deadline_date',
               'NULL as completed_date',
               'strings.value as title',
               'source_languages.english_name as source_language_name',
               'target_languages.english_name as target_language_name',
               'string_translations.translator_id as translator_id',
               'NULL as translate_job_id',
               'core_status.tp_revision AS revision',
               'core_status.ts_status AS ts_status',
               'NULL AS needs_update',
               'NULL AS editor',
               'string_translations.status = ' . ICL_TM_COMPLETE . '  AS has_completed_translation',
               'NULL AS editor_job_id',
               '0 AS automatic',
               'NULL AS job_title',
               'NULL AS review_status',
               'NULL AS element_id',
           );
   
           return $this->build_query( $params, $columns );
       }