Warning: Unsupported declare 'strict_types' in C:\xampp\htdocs\monitor\vendor\sebastian\global-state\tests\SnapshotTest.php on line 11

Parse error: syntax error, unexpected T_CLASS, expecting T_STRING or T_VARIABLE or '$' in C:\xampp\htdocs\monitor\vendor\sebastian\global-state\tests\SnapshotTest.php on line 33