Unexpected DB error occurred near:

Error After Major FUNC: add_update_counter_master_rec for rec_num: PL1322629183

--> set_rec_field_str called to set: "last_IP_addr" with value: {{35.175.120.174}}
--> set_rec_field_str called to set: "last_date" with value: {{1574143231}}
--> set_rec_field_str called to set: "S1" with value: {{1}}
--> set_rec_field_str called to set: "S2" with value: {{1574121600}}
--> set_rec_field_str called to set: "S3" with value: {{20}}
--> set_rec_field_str called to set: "S4" with value: {{1574035200}}
--> set_rec_field_str called to set: "S5" with value: {{}}
--> set_rec_field_str called to set: "S6" with value: {{1573516800}}
--> 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:
PL1322629183| I| 1| 138029| A| 35.175.120.174| 1574143231| 1| 1574121600| 20| 1574035200| | 1573516800| | 1572566400| | 1546300800| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |