Failed to expand bicep source '/home/runner/work/bicep-registry-modules/bicep-registry-modules/avm/res/api-management/service/tests/e2e/waf-aligned/main.test.bicep'. Exception calling "GetBicepResources" with "2" argument(s): "Unable to expand resources because the source file '/home/runner/work/bicep-registry-modules/bicep-registry-modules/avm/res/api-management/service/tests/e2e/waf-aligned/main.test.bicep' was not valid. An error occurred evaluating expression '[length(parameters('policies'))]' line 1419. Object reference not set to an instance of an object."