Error after installing erpnext version 13

i get this error while installing version13 on Ubuntu 20.10

 Traceback (most recent call last):
      File "/home/po/frappe-bench/apps/frappe/frappe/website/", line 49, in render
        data = render_page_by_language(path)
      File "/home/po/frappe-bench/apps/frappe/frappe/website/", line 178, in render_page_by_language
        return render_page(path)
      File "/home/po/frappe-bench/apps/frappe/frappe/website/", line 194, in render_page
        return build(path)
      File "/home/po/frappe-bench/apps/frappe/frappe/website/", line 201, in build
        return build_page(path)
      File "/home/po/frappe-bench/apps/frappe/frappe/website/", line 224, in build_page
        html = frappe.get_template(context.template).render(context)
      File "/home/po/frappe-bench/env/lib/python3.8/site-packages/jinja2/", line 1090, in render
      File "/home/po/frappe-bench/env/lib/python3.8/site-packages/jinja2/", line 832, in handle_exception
      File "/home/po/frappe-bench/env/lib/python3.8/site-packages/jinja2/", line 28, in reraise
        raise value.with_traceback(tb)
      File "/home/po/frappe-bench/apps/frappe/frappe/./www/login.html", line 62, in top-level template code
        <h4>{{ _('Login to {0}').format(app_name or _("Frappe")) }}</h4>
      File "/home/po/frappe-bench/apps/frappe/frappe/./templates/web.html", line 1, in top-level template code
        {% extends base_template_path %}
      File "/home/po/frappe-bench/apps/frappe/frappe/./templates/base.html", line 83, in top-level template code
        {% block content %}
      File "/home/po/frappe-bench/apps/frappe/frappe/./templates/web.html", line 72, in block "content"
        {{ main_content() }}
      File "/home/po/frappe-bench/env/lib/python3.8/site-packages/jinja2/", line 462, in call
        return, *args, **kwargs)
      File "/home/po/frappe-bench/env/lib/python3.8/site-packages/jinja2/", line 679, in _invoke
        rv = self._func(*arguments)
      File "/home/po/frappe-bench/apps/frappe/frappe/./templates/web.html", line 15, in template
        {% block page_container %}
      File "/home/po/frappe-bench/apps/frappe/frappe/./templates/web.html", line 30, in block "page_container"
        {%- block page_content -%}{%- endblock -%}
      File "/home/po/frappe-bench/apps/frappe/frappe/./www/login.html", line 73, in block "page_content"
        {{ _("You need to enable JavaScript for your app to work.") }}<br>{{ _("To enable it follow the instructions in the following link: {0}").format("<a href=''></a></p>") }}
      File "/home/po/frappe-bench/env/lib/python3.8/site-packages/jinja2/", line 456, in call
        return __self.format_string(fmt, args, kwargs, __obj)
      File "/home/po/frappe-bench/env/lib/python3.8/site-packages/jinja2/", line 449, in format_string
        rv = formatter.vformat(s, args, kwargs)
      File "/usr/lib/python3.8/", line 167, in vformat
        result, _ = self._vformat(format_string, args, kwargs, used_args, 2)
      File "/usr/lib/python3.8/", line 176, in _vformat
        for literal_text, field_name, format_spec, conversion in \
    ValueError: expected '}' before end of string

any idea how to solve this error??

I have the same problem, I’ve tried so many times to install this version but every time I get the same error
at first I tried to upgrade my version 12 to version 13 but it didn’t work then I tried to install version 13 on other device, each time I get the same error :weary:

does any one has any suggestions?!


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