When trying to install block_news_slider with the Moodle cli upgrade.php it gave this error:
*Dependencies check failed for block_news_slider You must solve all the plugin requirements before proceeding to install this Moodle version!
I was installing theme_adaptable, for the first time, at the same time that I was installing news_slider for the first time.
Theme Adaptable version: // Adaptable version date. $plugin->version = 2018022500; // Adaptable version. $plugin->release = '1.6.1';
I removed block_news_slider, and proceeded with the cli upgrade.php for theme_adaptable. Then I attempted to add block_news_slider plugin back, now that theme_adaptable is fully installed, but I received the same dependencies check error.
I didn't see this issue reported anywhere else in my initial search for resolution.