in Wolfram for Linux:

In[5]:= data = ExternalEvaluate[dbr,"SELECT * FROM overland;"]                  

DatabaseReference::shdw: 
   Symbol DatabaseReference appears in multiple contexts {System`, Global`}
    ; definitions in context System`
     may shadow or be shadowed by other definitions.

ExternalEvaluate::unknownSys: 
   Global`DatabaseReference[URL[mysql://xxxx:xxxx@localhost/personalinfor
       matics]] is not a known system in the ExternalEvaluate Framework.

Where do I find these contexts in the file system so I can determine where the duplicate is being loaded?