It seems like $this->classString can also be of type null; however, parameter $class of class_exists() does only seem to accept string, maybe add an additional type check?
(
Ignorable by Annotation
)
If this is a false-positive, you can also ignore this issue in your code via the ignore-type annotation
It seems like $this->classString can also be of type null; however, parameter $interface of interface_exists() does only seem to accept string, maybe add an additional type check?
(
Ignorable by Annotation
)
If this is a false-positive, you can also ignore this issue in your code via the ignore-type annotation