I have tried to install blogger to wordpress redirection plugin. After installation i tried to activate the plugin. That time i got the below error message.
due to this redirection is not happening properly.
below is my sample old blogger url.
As per the error messages, it seems issues related to stargazer theme. Not from blogger to WordPress redirection plugin.
blogger to WordPress redirection
I have changed my theme and now i didn't get the error now while activating. But the redirection is not correct still. Please check the below url.
This could be useful solution https://bloggertowp.org/tutorials/solved-blogger-to-wordpress-redirection-issue-with-hostgators-hosting/.