Thread:Extension talk:Maps/Fatal Error After Installation of Maps/reply

Given the information above "Fatal error: Cannot redeclare class ParamProcessor\Processor in /home/philosop/public_html/extensions/SemanticBundle/param-processor/param-processor/src/ParamProcessor/Processor.php on line 14", I'm guessing you had SemanticBundle installed before running a Maps update.

You cannot mix SemanticBundle with an arbitrary update of any of the components that comes with the bundle which includes Maps, SemanticMaps or SemanticMediaWiki. SemanticBundle (as the name suggests) bundles components to a fixed version therefore running an update beyond the deployed version will most likely cause some kind of error/fatal.

You have to choose between running SemanticBundle or to install components on an individual basis but mixing both methods will cause frictions [1].

[1] https://github.com/SemanticMediaWiki/SemanticMediaWiki/issues/573