Data preview not working in website

when i go to a feature group and click data preview in webpage it is throwing me this error
Server Error

project: naveen, Arrow Flight query: {“query_string”:“SELECT "naveen.dogecoin_1"."time", "naveen.dogecoin_1"."low", "naveen.dogecoin_1"."high", "naveen.dogecoin_1"."open", "naveen.dogecoin_1"."close", "naveen.dogecoin_1"."volume"\nFROM "naveen.dogecoin_1"\nLIMIT 50”,“features”:{“naveen.dogecoin_1”:[“time”,“low”,“high”,“open”,“close”,“volume”]},“filters”:null,“connectors”:{“naveen.dogecoin_1”:{“type”:“hudi”,“options”:null,“query”:null,“alias”:null,“filters”:null}}}