Front End :
Note : theme 327k is my magento 1.9 theme
Back End :
How to solve the theme error after migrate m1 to m2
Run below 4 QUERIES one by one in database.
DELETE FROM theme WHERE
theme_pathlike 327k in
themetable so you do not need to run first command.
After running this QUERIES in DB please run below commands once
rm -rf generated/* var/view_preprocessed/* var/page_cache/* php bin/magento setup:upgrade php bin/magento cache:clean php bin/magento cache:flush
Hope this will help you!
simply find this record
theme327k and delete from your database, and run
bin/magento setup:static-content:deploy -f
just search whole database wildcard, in phpmyadmin or
grep for value, also check if your theme is not defined in