Validation tool crashes on Quay 3.5.2 startup

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                  \___\ by Red Hat
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Running all default registry services
Running init script '/quay-registry/conf/init/certs_create.sh'
Generating a RSA private key
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writing new private key to 'mitm-key.pem'
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Running init script '/quay-registry/conf/init/certs_install.sh'
Installing extra certificates found in /quay-registry/conf/stack/extra_ca_certs directory
Running init script '/quay-registry/conf/init/copy_config_files.sh'
Running init script '/quay-registry/conf/init/d_validate_config_bundle.sh'
Validating Configuration
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0xc5265c]

goroutine 101 [running]:
github.com/quay/config-tool/pkg/lib/shared.ValidateHostIsReachable(0x7ffe99122de1, 0x6, 0xc0001101b0, 0xc0001480a0, 0x11, 0x12103d9, 0x1c, 0x11ff737, 0xf, 0x0, ...)
        /remote-source/app/source/config-tool/pkg/lib/shared/validators.go:237 +0x7c
github.com/quay/config-tool/pkg/lib/fieldgroups/securityscanner.(*SecurityScannerFieldGroup).Validate(0xc000033020, 0x7ffe99122de1, 0x6, 0xc0001101b0, 0xc000360ba8, 0x0, 0x0)
        /remote-source/app/source/config-tool/pkg/lib/fieldgroups/securityscanner/securityscanner_validator.go:66 +0x5e5
github.com/quay/config-tool/commands.glob..func3.1(0xc00016b290, 0xc0004e1250, 0xc0001101b0, 0xc0002c7b00, 0xc0002fede2, 0xc000116e60)
        /remote-source/app/source/config-tool/commands/validate.go:108 +0xd4
created by github.com/quay/config-tool/commands.glob..func3
        /remote-source/app/source/config-tool/commands/validate.go:93 +0x4eb