Error when adding dummy data in to created site in ERPNext

I have installed ERPNext successfully on a ubuntu server and created a site csvdata and now was trying to add / load some local dummy data in to that site as below

bench --site csvdata execute erpnext.demo.demo.make

but was facing the below error

Complete Setup... Traceback (most recent call last): File "/usr/lib/python2.7/runpy.py", line 174, in _run_module_as_main "__main__", fname, loader, pkg_name) File "/usr/lib/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 79, in <module> main() File "/home/frappe/frappe-bench/apps/frappe/frappe/utils/bench_helper.py", line 16, in main click.Group(commands=commands)(prog_name='bench') File "/home/frappe/frappe-bench/env/local/lib/python2.7/site-packages/click/core.py", line 716, in __call__ return self.main(*args, **kwargs) File "/home/frappe/frappe-bench/env/local/lib/python2.7/site-packages/click/core.py", line 696, in main rv = self.invoke(ctx) File "/home/frappe/frappe-bench/env/local/lib/python2.7/site-packages/click/core.py", line 1060, in invoke return _process_result(sub_ctx.command.invoke(sub_ctx)) File "/home/frappe/frappe-bench/env/local/lib/python2.7/site-packages/click/core.py", line 1060, in invoke return _process_result(sub_ctx.command.invoke(sub_ctx)) File "/home/frappe/frappe-bench/env/local/lib/python2.7/site-packages/click/core.py", line 889, in invoke return ctx.invoke(self.callback, **ctx.params) File "/home/frappe/frappe-bench/env/local/lib/python2.7/site-packages/click/core.py", line 534, in invoke return callback(*args, **kwargs) File "/home/frappe/frappe-bench/env/local/lib/python2.7/site-packages/click/decorators.py", line 17, in new_func return f(get_current_context(), *args, **kwargs) File "/home/frappe/frappe-bench/apps/frappe/frappe/commands/__init__.py", line 24, in _func ret = f(frappe._dict(ctx.obj), *args, **kwargs) File "/home/frappe/frappe-bench/apps/frappe/frappe/commands/utils.py", line 110, in execute ret = frappe.get_attr(method)(*args, **kwargs) File "/home/frappe/frappe-bench/apps/erpnext/erpnext/demo/demo.py", line 28, in make setup_data.setup(domain) File "/home/frappe/frappe-bench/apps/erpnext/erpnext/demo/setup/setup_data.py", line 13, in setup setup_fiscal_year() File "/home/frappe/frappe-bench/apps/erpnext/erpnext/demo/setup/setup_data.py", line 81, in setup_fiscal_year "year_end_date": "{0}-12-31".format(year) File "/home/frappe/frappe-bench/apps/frappe/frappe/model/document.py", line 189, in insert self.run_before_save_methods() File "/home/frappe/frappe-bench/apps/frappe/frappe/model/document.py", line 750, in run_before_save_methods self.run_method("validate") File "/home/frappe/frappe-bench/apps/frappe/frappe/model/document.py", line 651, in run_method out = Document.hook(fn)(self, *args, **kwargs) File "/home/frappe/frappe-bench/apps/frappe/frappe/model/document.py", line 858, in composer return composed(self, method, *args, **kwargs) File "/home/frappe/frappe-bench/apps/frappe/frappe/model/document.py", line 841, in runner add_to_return_value(self, fn(self, *args, **kwargs)) File "/home/frappe/frappe-bench/apps/frappe/frappe/model/document.py", line 645, in <lambda> fn = lambda self, *args, **kwargs: getattr(self, method)(*args, **kwargs) File "/home/frappe/frappe-bench/apps/erpnext/erpnext/accounts/doctype/fiscal_year/fiscal_year.py", line 26, in validate self.validate_overlap() File "/home/frappe/frappe-bench/apps/erpnext/erpnext/accounts/doctype/fiscal_year/fiscal_year.py", line 81, in validate_overlap .format(existing.name), frappe.NameError) File "/home/frappe/frappe-bench/apps/frappe/frappe/__init__.py", line 309, in throw msgprint(msg, raise_exception=exc, title=title, indicator='red') File "/home/frappe/frappe-bench/apps/frappe/frappe/__init__.py", line 302, in msgprint _raise_exception() File "/home/frappe/frappe-bench/apps/frappe/frappe/__init__.py", line 275, in _raise_exception raise raise_exception, encode(msg) frappe.exceptions.NameError: Year start date or end date is overlapping with 2016-2017. To avoid please set company

What was this error about and where it has gone wrong ?

Seems like you are creating dummy data in a site where there are already some data (Fiscal years) exists. Please reinstall your site and then try to make demo data.