diff --git a/client/src/api/index.ts b/client/src/api/index.ts
index a32e076b84ff..0d17530014d2 100644
--- a/client/src/api/index.ts
+++ b/client/src/api/index.ts
@@ -228,5 +228,5 @@ export function userOwnsHistory(user: User | AnonymousUser | null, history: AnyH
 }
 
 function hasOwner(history: AnyHistory): history is HistorySummaryExtended {
-    return "user_id" in history;
+    return "user_id" in history && history.user_id !== null;
 }
diff --git a/lib/galaxy/config/sample/datatypes_conf.xml.sample b/lib/galaxy/config/sample/datatypes_conf.xml.sample
index 53bba60a3c52..96be00d60aa7 100644
--- a/lib/galaxy/config/sample/datatypes_conf.xml.sample
+++ b/lib/galaxy/config/sample/datatypes_conf.xml.sample
@@ -417,6 +417,8 @@
       <converter file="interval_to_bgzip_converter.xml" target_datatype="bgzip"/>
       <converter file="bed_gff_or_vcf_to_bigwig_converter.xml" target_datatype="bigwig"/>
     </datatype>
+    <datatype extension="4dn_pairs" type="galaxy.datatypes.tabular:Tabular" subclass="true" display_in_upload="true" description="The pairs format is a standard text format for pairs of genomic loci given as 1bp point positions" description_url="https://github.com/4dn-dcic/pairix/blob/master/pairs_format_specification.md#pairs-file"/>
+    <datatype extension="4dn_pairsam" type="galaxy.datatypes.tabular:Tabular" subclass="true" display_in_upload="true" description="A simple tabular format to store the information on ligation junctions detected in sequences from Hi-C experiments." description_url="https://pairsamtools.readthedocs.io/en/latest/pairsam.html"/>
     <datatype extension="pdf" type="galaxy.datatypes.images:Pdf" mimetype="application/pdf" display_in_upload="true"/>
     <datatype extension="pileup" type="galaxy.datatypes.tabular:Pileup" display_in_upload="true">
       <converter file="interval_to_bgzip_converter.xml" target_datatype="bgzip"/>