ACP Search error

I get this error when searching ACP (all addons disabled)

Code:

ErrorException: [E_WARNING] Cannot declare class XF\AdminSearch\PublicTemplate, because the name is already in use in src/XF.php at line 397
XF::handlePhpError()
class_alias() in src/XF.php at line 397
XF::createAliasForClass() in src/XF/AdminSearch/Searcher.php at line 156
XF\AdminSearch\Searcher->addHandlerClass() in src/XF/AdminSearch/Searcher.php at line 165
XF\AdminSearch\Searcher->addHandlerClasses() in...

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