Background of the issue:
I installed Performant Translation and Speculative Loading plugins and then uninstalled them. After doing this, I noticed several PHP warnings related to failed file inclusions.
Symptoms:
PHP Warning: include(): Failed opening '/home/admin/domains/antzracing.com/public_html/wp-content/languages/plugins/speculation-rules-de_DE.l10n.php' for inclusion. PHP Warning: include(/home/admin/domains/antzracing.com/public_html/wp-content/languages/plugins/speculation-rules-de_DE.l10n.php): Failed to open stream: No such file or directory. PHP Warning: include(/home/admin/domains/antzracing.com/public_html/wp-content/languages/plugins/performant-translations-de_DE.l10n.php): Failed to open stream: No such file or directory.
Questions:
How to deal with the PHP warnings after uninstalling the plugins?