ORA-00600: internal error code, arguments: [kwqitnmphe:ltbagi]

There are a lot ORA-00600 [kwqitnmphe:ltbagi] errors in alert log, this error is caused by a QMON slave background process:

*** 2019-10-05 18:43:28.563
*** SESSION ID:(1906.11789) 2019-10-05 18:43:28.563
*** CLIENT ID:() 2019-10-05 18:43:28.563
*** SERVICE NAME:(SYS$BACKGROUND) 2019-10-05 18:43:28.563
*** MODULE NAME:(Streams) 2019-10-05 18:43:28.563
*** ACTION NAME:(QMON Slave) 2019-10-05 18:43:28.563

kwqitmmit during kwqitmmit:time mgr IOT proc: Error 600 in Queue 
                                Table SYS.SYS$SERVICE_METRICS_TAB
kwqicaclcur: Error 600
Cursor Session Number : 1904
Cursor Session Serial : 24687
Cursor Pin Number : 24585
kwqitmmit during kwqitmmit:end proc: Error 600 in Queue Table 
                                        SYS.SYS$SERVICE_METRICS_TAB
kwqitptm: error 600 encountered during serving 10008981

*** 2019-10-05 18:43:28.564
ORA-00600: internal error code, arguments: [kwqitnmphe:ltbagi], 
                        [1], [0], [], [], [], [], [], [], [], [], []
OPIRIP: Uncaught error 447. Error stack:
ORA-00447: fatal error in background process
ORA-00600: internal error code, arguments: [kwqitnmphe:ltbagi], [1], 
                             [0], [], [], [], [], [], [], [], [], []