Sorting projects by start date returns "No results"

[vildead]

Sorting projects by start dates does not work - returns no results

• Deployment: daisy-test.lcsb.uni.lu
• Version 1.3.0

daisy log:

WARNING 2020-04-16 23:12:37,681 log 31208 139903498270528 Not Found: /favicon.ico
WARNING 2020-04-16 23:12:37,681 log 31208 139903498270528 Not Found: /favicon.ico
DEBUG 2020-04-16 23:12:44,787 utils 31208 139903498270528 search_objects query=None filter=defaultdict(<class 'list'>, {}) facets=('local_custodians', 'start_year', 'end_year', 'disease_terms', 'study_terms', 'phenotype_terms', 'gene_terms', 'has_cner', 'has_erp', 'has_legal_documents', 'funding_sources', 'company_personnel', 'contacts') model_object=<class 'core.models.project.Project'> order_by=None
WARNING 2020-04-16 23:12:45,371 log 31208 139903498270528 Not Found: /favicon.ico
WARNING 2020-04-16 23:12:45,371 log 31208 139903498270528 Not Found: /favicon.ico
DEBUG 2020-04-16 23:12:46,799 utils 31208 139903498270528 search_objects query=None filter=defaultdict(<class 'list'>, {}) facets=('local_custodians', 'start_year', 'end_year', 'disease_terms', 'study_terms', 'phenotype_terms', 'gene_terms', 'has_cner', 'has_erp', 'has_legal_documents', 'funding_sources', 'company_personnel', 'contacts') model_object=<class 'core.models.project.Project'> order_by=start_date