package.xml states 5.3.7
But 6d993db breaks support for 5.x
I don't think it makes sense to keep support for so old EOL version
Which solution?
- restore 5.x compatibility ?
- raise the minimal supported version to 7.0
- raise the minimal supported version to 7.4 ? or 8.0 ? and clean the sources of most/all the conditions on PHP_VERSION_ID