Specifiy psr/log version to ensure PHP 7 compatibility

composer.json

@@ -8,7 +8,8 @@
     "monolog/monolog": "^2.0",
     "twig/twig": "^3.0",
     "ext-json": "*",
-    "php": "^7.2||^8.0",
+    "php": "^7.2 | ^8.0",
+    "psr/log": "1.1.*",
     "woocommerce/action-scheduler": "^3.1",
     "php-di/php-di": "^6.3",
     "php-di/invoker": "2.0.0",