Drupal 8.x

I want to only translate comment form, three things

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So I added new custom language....called en-si

I translated those three fields but when I enable it, my content form dissapears altogether....

if I switch back the language to default english, the form comes back.....

What am I doing wrong?

The machine name of my taxonomy term migration is upgrade_d7_taxonomy_term_media_folders

When I try to migrate the terms using migrate UI from admin/structure/migrate/manage/migrate_drupal_7/migrations/upgrade_d7_taxonomy_term_media_folders/execute what I can see is, the terms are migrated but the hierarchy of terms is not migrated. Does migrate module has any issues with migrating term hierarchy?

Hi!!

I faced at sudden white screen while hitting the Durpal8 site. I searched in the logs but Theres nothing in the logs.please help me to solve this problem.

I am new to Drupal development. I am proficient in WordPress, and I have just been informed that we are migrating to Drupal and I need some help please? They have asked me to identify the template used for a previous website they had created in Drupal and no longer have access to? I have PDFs of the pages, can anyone direct me to where I might be able to search through templates and identify which one was used please? This is urgent and important please, thank you! Timothy

How can I compute and display the value of cost which is weight multiplied by 5?

Do I use yaml to compute cost? Or do I have to use other language? How do I attach the yaml or the other language I use? 

Here is the yaml: