After Login into the admin panel, I have this screen, I am not sure how to fix this.
I have just moved from one hosting to other and added one Extension.
I am not able to see the extension so, wasn't available for remove the extension.
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Use SSH or FTP to access your
app/etc/modules directory and open the XML file of the last installed extension.
Search for the tag
<active>true</active> and change it to
<active>false</active>. Save the file.
Also clear your
/var/cache/ directory. Flush Redis and Vagrant if any of this is installed.