Unexpected DB error occurred near:

Error After Major FUNC: add_update_counter_master_rec for rec_num: CL000024

--> set_rec_field_str called to set: "last_IP_addr" with value: {{54.197.177.115}}
--> set_rec_field_str called to set: "last_date" with value: {{1429452275}}
--> set_rec_field_str called to set: "S1" with value: {{1}}
--> set_rec_field_str called to set: "S2" with value: {{1429401600}}
--> set_rec_field_str called to set: "S3" with value: {{41}}
--> set_rec_field_str called to set: "S4" with value: {{1429315200}}
--> set_rec_field_str called to set: "S5" with value: {{}}
--> set_rec_field_str called to set: "S6" with value: {{1428796800}}
--> set_rec_field_str called to set: "S7" with value: {{}}
--> set_rec_field_str called to set: "S8" with value: {{1427846400}}
--> set_rec_field_str called to set: "S9" with value: {{}}
--> set_rec_field_str called to set: "S10" with value: {{1420070400}}
--> 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:
CL000024| I| 1| 45380| A| 54.197.177.115| 1429452275| 1| 1429401600| 41| 1429315200| | 1428796800| | 1427846400| | 1420070400| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |