Error message

• Deprecated function: Return type of RulesRecursiveElementIterator::hasChildren() should either be compatible with RecursiveIterator::hasChildren(): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in include_once() (line 2087 of /proj/hp/apps/mwrn/sites/all/modules/rules/includes/rules.core.inc).
• Deprecated function: Return type of RulesRecursiveElementIterator::getChildren() should either be compatible with RecursiveIterator::getChildren(): ?RecursiveIterator, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in include_once() (line 2087 of /proj/hp/apps/mwrn/sites/all/modules/rules/includes/rules.core.inc).
• Deprecated function: Return type of RulesContainerPlugin::getIterator() should either be compatible with IteratorAggregate::getIterator(): Traversable, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in include_once() (line 2101 of /proj/hp/apps/mwrn/sites/all/modules/rules/includes/rules.core.inc).