TypeError: implode(): Argument #1 ($pieces) must be of type array, string given in implode() (line 39 of modules/contrib/page_cache_query_ignore/src/Form/PageCacheQueryIgnoreConfigForm.php).
Somehow the module was "wrongly" enabled (drush pm:enable page_cache_query_ignore returned an unrelated error).
Reinstalling the module fixed the error.
Small sanity check before using implode(). Use implode() only if $config->get('query_parameters') in not empty.
Closed: cannot reproduce
2.1
Code
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