New customize appp doctype linking

Hi,
i created a new app planning.
i replaced the file from my local to the file in server.
But im getting the error while bench migrate
File “/usr/lib64/python2.7/runpy.py”, line 162, in _run_module_as_main
main”, fname, loader, pkg_name)
File “/usr/lib64/python2.7/runpy.py”, line 72, in _run_code
exec code in run_globals
File “/home/frappe/frappe-bench/apps/frappe/frappe/utils/bench_helper.py”, line 77, in
main()
File “/home/frappe/frappe-bench/apps/frappe/frappe/utils/bench_helper.py”, line 14, in main
click.Group(commands=commands)(prog_name=‘bench’)
File “/home/frappe/frappe-bench/env/lib/python2.7/site-packages/click/core.py”, line 664, in call
return self.main(*args, **kwargs)
File “/home/frappe/frappe-bench/env/lib/python2.7/site-packages/click/core.py”, line 644, in main
rv = self.invoke(ctx)
File “/home/frappe/frappe-bench/env/lib/python2.7/site-packages/click/core.py”, line 991, in invoke
return _process_result(sub_ctx.command.invoke(sub_ctx))
File “/home/frappe/frappe-bench/env/lib/python2.7/site-packages/click/core.py”, line 991, in invoke
return _process_result(sub_ctx.command.invoke(sub_ctx))
File “/home/frappe/frappe-bench/env/lib/python2.7/site-packages/click/core.py”, line 837, in invoke
return ctx.invoke(self.callback, **ctx.params)
File “/home/frappe/frappe-bench/env/lib/python2.7/site-packages/click/core.py”, line 464, in invoke
return callback(*args, **kwargs)
File “/home/frappe/frappe-bench/apps/frappe/frappe/commands.py”, line 28, in _func
ret = f(frappe._dict(ctx.obj), *args, **kwargs)
File “/home/frappe/frappe-bench/apps/frappe/frappe/commands.py”, line 207, in migrate
frappe.model.sync.sync_all(verbose=context.verbose)
File “/home/frappe/frappe-bench/apps/frappe/frappe/model/sync.py”, line 19, in sync_all
sync_for(app, force, verbose=verbose)
File “/home/frappe/frappe-bench/apps/frappe/frappe/model/sync.py”, line 43, in sync_for
import_file_by_path(doc_path, force=force)
File “/home/frappe/frappe-bench/apps/frappe/frappe/modules/import_file.py”, line 54, in import_file_by_path
import_doc(doc, force=force, data_import=data_import)
File “/home/frappe/frappe-bench/apps/frappe/frappe/modules/import_file.py”, line 120, in import_doc
doc.insert()
File “/home/frappe/frappe-bench/apps/frappe/frappe/model/document.py”, line 188, in insert
self.db_insert()
File “/home/frappe/frappe-bench/apps/frappe/frappe/model/base_document.py”, line 254, in db_insert
), d.values())
File “/home/frappe/frappe-bench/apps/frappe/frappe/database.py”, line 135, in sql
self._cursor.execute(query, values)
File “/home/frappe/frappe-bench/env/lib/python2.7/site-packages/MySQLdb/cursors.py”, line 205, in execute
self.errorhandler(self, exc, value)
File “/home/frappe/frappe-bench/env/lib/python2.7/site-packages/MySQLdb/connections.py”, line 36, in defaulterrorhandler
raise errorclass, errorvalue
frappe.exceptions.NameError: (u’Report’, u’Task List’, IntegrityError(1062, “Duplicate entry ‘Task List’ for key ‘PRIMARY’”))

How to clear the error. Please help me