What error message might occur if the object operator is not used correctly in PHP?

If the object operator (->) is not used correctly in PHP, you may encounter an error message such as "Parse error: syntax error, unexpected '->'". This error occurs when the object operator is used incorrectly, such as when trying to access a property or method of an object without first creating an instance of the object. To solve this issue, make sure to create an instance of the object before using the object operator to access its properties or methods.

// Incorrect usage of object operator
$object->property;

// Correct usage of object operator
$object = new ClassName();
$object->property;