Drupal 8.x

I have started getting this message in the status report and I don't know what I'm supposed to do to correct it. Any advice would be appreciated.

Mismatched entity and/or field definitions
The following changes were detected in the entity type and field definitions.

Content

• Delete the URL alias field.

Taxonomy term

• Delete the URL alias field.

Hay Guys i want generate a CSV file i create function (generate_contactForm_data()) ho generate my file know i want to associate the function white the menu link if some one can help me plz
thenk you

I wrote a module that shows a content of the database. The controller in src\Controller calls a database select clause that should retrieve the most current data from the database (the database call is in the class in src directory of the module).

Does someone have an idea how to get rid of all this link rel stuff in the header of drupal 8?

i am talking about this stuff:

I have searched a long time but could not find a solution. I just found the following, but that does not work ;-(

Hi,

If I want to install drupal with the dutch language file it doesn' work, see my install:
http://www.pcvoweb.be/dr8_fotoclub/core/install.php

Anywone know this problem or how to solve this?

Regards
Kristof

Hi there,

I created a subtheme for my bootstrap theme and added a new container for a header image.
Unfortunately, the width of this cointainer doesn't fit to the width of the other containers, like the navbar.
I've tried to add "margin-right: 30px" to fix the overlapping, but that didn't work.