CouchDB stacktrace

gistfile1.txt

[error] 2017-08-16T15:46:19.880967Z couchdb@localhost <0.31396.135> -------- rpc couch_db:update_docs/4 function_clause [{couch_att,flush_data,[<0.18240.135>,stub,{att,<<"static/manifest.json">>,<<"application/json">>,303,303,<<104,90,16,208,215,168,186,234,246,222,101,113,104,182,40,52>>,1,stub,identity}],[{file,"src/couch_att.erl"},{line,484}]},{couch_db,'-doc_flush_atts/2-lc$^0/1-0-',2,[{file,"src/couch_db.erl"},{line,1144}]},{couch_db,doc_flush_atts,2,[{file,"src/couch_db.erl"},{line,1144}]},{couch_db,'-update_docs/4-lc$^8/1-8-',2,[{file,"src/couch_db.erl"},{line,999}]},{couch_db,'-update_docs/4-lc$^7/1-7-',2,[{file,"src/couch_db.erl"},{line,998}]},{couch_db,update_docs,4,[{file,"src/couch_db.erl"},{line,998}]},{fabric_rpc,with_db,3,[{file,"src/fabric_rpc.erl"},{line,284}]},{rexi_server,init_p,3,[{file,"src/rexi_server.erl"},{line,139}]}]
[error] 2017-08-16T15:46:19.881319Z couchdb@localhost <0.29072.135> 868e70f023 req_err(2144292456) unknown_error : function_clause
    [<<"chttpd_db:update_doc/4 L1001">>,<<"chttpd_db:send_updated_doc/6 L965">>,<<"chttpd:process_request/1 L295">>,<<"chttpd:handle_request_int/1 L231">>,<<"mochiweb_http:headers/6 L91">>,<<"proc_lib:init_p_do_apply/3 L237">>]