Module development and code questions

Error message

Warning: Undefined array key "database" in Drupal\mysql\Driver\Database\mysql\Schema->getPrefixInfo() (line 60 of core\modules\mysql\src\Driver\Database\mysql\Schema.php).

Hi there, 

I am using the content reference module and would like to show the taxonomy tags related to a node. 

in my preprocess function I have this:

- 

Hey,

We have written a Drupal module controller. It allows a user to select a course then enroll in the course. Upon successful enrollment the user is allowed to select another course and enroll in that course. After doing the enrollment process successfully 5 to 6 even 12 times in a row the course enrollment fails with this error in the browser console.

Hi,

I have some modules from a D7 site wich i shold convert to D9/D10

I use the

drush dmu-analyze modulename

Which works perfectly and i can remove old issues and obstacles.

But when it comes to classes, it really dont work.

I have followed some guides and everything fails, either because its not a Drupal namespace or it cant be found.

I would really apprechiate any help in this.

Drupal/modules/custom/test.module

Hello,

I have a custom form in which I want to add several inputs. In the following test, I add a "car2" field. Visually I can see the new input created, but when I submit the form, "car2" is not present in $form and $form_state, there is only "car1".

I think I'm missing a behavior that wicks :p

Hi,

my requirement is to get thumbprint of the certificate and I am trying to use this 

$thumb = openssl_x509_fingerprint($certContent,"RSA-SHA256",false);

$thumb1 = openssl_x509_fingerprint($certContent,"sha256",false);

But the return of the above is not matching with the thumbprint.

when I open the cert and check "Details" --> Thumbprint , it is different than what is returned from above function. when I check here "signature algorithm = sha256RSA"   and "signature hash algorithm = sha256"

Please let me know if I am missing something.