Update src/Database/Adapter/MariaDB.php

Co-authored-by: greptile-apps[bot] <165735046+greptile-apps[bot]@users.noreply.github.com>

Author: abnegate

src/Database/Adapter/MariaDB.php

@@ -1649,8 +1649,8 @@ protected function getSQLCondition(Query $query, array &$binds, ?string $forColl
                         Query::TYPE_NOT_STARTS_WITH => $this->escapeWildcards($value) . '%',
                         Query::TYPE_ENDS_WITH => '%' . $this->escapeWildcards($value),
                         Query::TYPE_NOT_ENDS_WITH => '%' . $this->escapeWildcards($value),
-                        Query::TYPE_CONTAINS, Query::TYPE_CONTAINS_ANY => ($query->onArray()) ? '%' . $this->escapeWildcards((string) \json_encode($value)) . '%' : '%' . $this->escapeWildcards($value) . '%',
-                        Query::TYPE_NOT_CONTAINS => ($query->onArray()) ? '%' . $this->escapeWildcards((string) \json_encode($value)) . '%' : '%' . $this->escapeWildcards($value) . '%',
+                        Query::TYPE_CONTAINS, Query::TYPE_CONTAINS_ANY => ($query->onArray()) ? '%' . $this->escapeWildcards((string) (\json_encode($value) ?: '')) . '%' : '%' . $this->escapeWildcards($value) . '%',
+                        Query::TYPE_NOT_CONTAINS => ($query->onArray()) ? '%' . $this->escapeWildcards((string) (\json_encode($value) ?: '')) . '%' : '%' . $this->escapeWildcards($value) . '%',
                         default => $value
                     };