Magento 2.3.3 - How to solve Unable to load theme by specified key

[Aveeva]

Front End :

Note : theme 327k is my magento 1.9 theme

Back End :

How to solve the theme error after migrate m1 to m2

[theMageComp]

Hello @Aveeva 

Did you take a look at blog for the issue?

https://bssthemes.com/blog/unable-to-load-theme-by-specified-key/

[Aveeva]

@theMageComp My specified key: 'default/theme327k' if run the query : select* from core_config_data where path = 'design/theme/theme_id' and value = "default/theme327k" empty result showing, how to solve the issue?

Note : Back-end working Friend-end only the error?