Unexpected DB error occurred near:

Error After Major FUNC: add_update_counter_master_rec for rec_num: PL1309368495

--> set_rec_field_str called to set: "last_IP_addr" with value: {{18.205.176.85}}
--> set_rec_field_str called to set: "last_date" with value: {{1573967135}}
--> set_rec_field_str called to set: "S1" with value: {{1}}
--> set_rec_field_str called to set: "S2" with value: {{1573948800}}
--> set_rec_field_str called to set: "S3" with value: {{24}}
--> set_rec_field_str called to set: "S4" with value: {{1573862400}}
--> set_rec_field_str called to set: "S5" with value: {{}}
--> set_rec_field_str called to set: "S6" with value: {{1573344000}}
--> set_rec_field_str called to set: "S7" with value: {{}}
--> set_rec_field_str called to set: "S8" with value: {{1572566400}}
--> set_rec_field_str called to set: "S9" with value: {{}}
--> set_rec_field_str called to set: "S10" with value: {{1546300800}}
--> update_record called
*** get_db_error_msg called to return: Error from cbt level ***
===> ISAM error: Error from cbt level data file: Qfiles/Qcounters.db CBT error: key not found function: cbunlock context: finding leaf containing key ----> update_record function FAILED with error: Error from cbt level

DB Error= 1

Error Record's Field Contents:
PL1309368495| I| 1| 17923| A| 18.205.176.85| 1573967135| 1| 1573948800| 24| 1573862400| | 1573344000| | 1572566400| | 1546300800| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |