TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, class Doku_Renderer_metadata does not have a method "rowspan"

TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, class Doku_Renderer_metadata does not have a method "rowspan"

An unforeseen error has occured. This is most likely a bug somewhere. It might be a problem in the tag plugin.

More info has been written to the DokuWiki error log.