Error processing output files

[Adoru Sharon K]

hello. i successfully run a simulation in SWAT plus but for a short period of time. when i increased the simulation period, i got this error message while processing output files. Traceback (most recent call last):
  File "peewee.py", line 3291, in execute_sql
sqlite3.OperationalError: database is locked

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "swatplus_api.py", line 119, in <module>
  File "actions\read_output.py", line 164, in read
  File "actions\read_output.py", line 308, in setup_meta_tables
  File "peewee.py", line 2011, in inner
  File "peewee.py", line 2082, in execute
  File "peewee.py", line 2600, in _execute
  File "peewee.py", line 3299, in execute
  File "peewee.py", line 3289, in execute_sql
  File "peewee.py", line 3059, in __exit__
  File "peewee.py", line 192, in reraise
  File "peewee.py", line 3291, in execute_sql
peewee.OperationalError: database is locked
[25756] Failed to execute script 'swatplus_api' due to unhandled exception!
what kind of error is this and how can i solve it?

[Yaser Kishawi]

I had the same error. I don't know the reason. Any help?