Error while creating new kanban board

hello guys
i got this error each time i try creating a new kanban board as a sub project of an already defined project

“Traceback (most recent call last):
File “/home/frappe/prod-bench/apps/frappe/frappe/”, line 62, in application
response = frappe.handler.handle()
File “/home/frappe/prod-bench/apps/frappe/frappe/”, line 22, in handle
data = execute_cmd(cmd)
File “/home/frappe/prod-bench/apps/frappe/frappe/”, line 53, in execute_cmd
return, **frappe.form_dict)
File “/home/frappe/prod-bench/apps/frappe/frappe/”, line 939, in call
return fn(*args, **newargs)
File “/home/frappe/prod-bench/apps/frappe/frappe/desk/”, line 21, in get
data = compress(execute(**args), args = args)
File “/home/frappe/prod-bench/apps/frappe/frappe/desk/”, line 26, in execute
return DatabaseQuery(doctype).execute(*args, **kwargs)
File “/home/frappe/prod-bench/apps/frappe/frappe/model/”, line 88, in execute
result = self.build_and_run()
File “/home/frappe/prod-bench/apps/frappe/frappe/model/”, line 100, in build_and_run
args = self.prepare_args()
File “/home/frappe/prod-bench/apps/frappe/frappe/model/”, line 118, in prepare_args
File “/home/frappe/prod-bench/apps/frappe/frappe/model/”, line 257, in set_optional_columns
columns = frappe.db.get_table_columns(self.doctype)
File “/home/frappe/prod-bench/apps/frappe/frappe/”, line 849, in get_table_columns
return self.get_db_table_columns(‘tab’ + doctype)
File “/home/frappe/prod-bench/apps/frappe/frappe/”, line 845, in get_db_table_columns
return [r[0] for r in self.sql(“DESC %s” % table)]
File “/home/frappe/prod-bench/apps/frappe/frappe/”, line 176, in sql
File “/home/frappe/prod-bench/env/local/lib/python2.7/site-packages/pymysql/”, line 170, in execute
result = self._query(query)
File “/home/frappe/prod-bench/env/local/lib/python2.7/site-packages/pymysql/”, line 328, in _query
File “/home/frappe/prod-bench/env/local/lib/python2.7/site-packages/pymysql/”, line 893, in query
self._affected_rows = self._read_query_result(unbuffered=unbuffered)
File “/home/frappe/prod-bench/env/local/lib/python2.7/site-packages/pymysql/”, line 1103, in _read_query_result
File “/home/frappe/prod-bench/env/local/lib/python2.7/site-packages/pymysql/”, line 1396, in read
first_packet = self.connection._read_packet()
File “/home/frappe/prod-bench/env/local/lib/python2.7/site-packages/pymysql/”, line 1059, in _read_packet
File “/home/frappe/prod-bench/env/local/lib/python2.7/site-packages/pymysql/”, line 384, in check_error
File “/home/frappe/prod-bench/env/local/lib/python2.7/site-packages/pymysql/”, line 109, in raise_mysql_exception
raise errorclass(errno, errval)
InternalError: (1684, u"Table ‘7125de63fb0b7549’.‘tabTask’ was skipped since its definition is being modified by concurrent DDL statement”)"


Any chance you were running an update in the background?

well, no but i tried again and the error has not been shown again, strange but if it happened again i will post here

just another question though, why is the connection to erpnext server is slow through my browser? when i connect to the server through ssh it connects very fast, but website takes some time to load, around 5-10 seconds minimum,
Is there a way i can trace this to see where is the problem?

I guess you were making a new Kanban Board which resulted in this error?