Minor solid gauge isssue

[SingularityJ]

Minor bug, when adding the solid gauge widget. if 5 (no issue modifying after dependency install) stops is selected before the dependencies are installed, it will produce the following:
(no issue modifying after dependency install)

Error 500: Internal Server Error
Something bad happened but it's probably not your fault. Letting the developers know about these issues is crucial to supporting Mycodo. Please submit a new issue on GitHub with the following diagnostic information and error traceback (copy the entire traceback):

Version: 8.12.9
Database: 0187ea22dc4b
Model: Raspberry Pi 4 Model B Rev 1.4

Release:
Distributor ID: Raspbian
Description: Raspbian GNU/Linux 11 (bullseye)
Release: 11
Codename: bullseye

Firmware:
b''

Error (Full Traceback):

Traceback (most recent call last):
File "/home/pi/Mycodo/env/lib/python3.9/site-packages/flask/app.py", line 2073, in wsgi_app
response = self.full_dispatch_request()
File "/home/pi/Mycodo/env/lib/python3.9/site-packages/flask/app.py", line 1518, in full_dispatch_request
rv = self.handle_user_exception(e)
File "/home/pi/Mycodo/env/lib/python3.9/site-packages/flask_restx/api.py", line 672, in error_router
return original_handler(e)
File "/home/pi/Mycodo/env/lib/python3.9/site-packages/flask/app.py", line 1516, in full_dispatch_request
rv = self.dispatch_request()
File "/home/pi/Mycodo/env/lib/python3.9/site-packages/flask/app.py", line 1502, in dispatch_request
return self.ensure_sync(self.view_functions[rule.endpoint])(**req.view_args)
File "/home/pi/Mycodo/env/lib/python3.9/site-packages/flask_login/utils.py", line 272, in decorated_view
return func(*args, **kwargs)
File "/home/pi/Mycodo/mycodo/mycodo_flask/routes_dashboard.py", line 145, in page_dashboard
unmet_dependencies = utils_dashboard.widget_add(form_base, request.form)
File "/home/pi/Mycodo/mycodo/mycodo_flask/utils/utils_dashboard.py", line 230, in widget_add
error, new_widget = dict_widgets[widget_name]['execute_at_creation'](
File "/home/pi/Mycodo/mycodo/widgets/widget_gauge_solid.py", line 51, in execute_at_creation
color = color_list[i + 1]
IndexError: list index out of range

[kizniche]

Thanks for the bug report. I'll check it out.

[kizniche]

This issue has been mentioned on Radical DIY Forum. There might be relevant details there:

https://forum.radicaldiy.com/t/mycodo-v8-13-0-release/820/1