SIGSEGV when master passphrase is not entered

[kvaps]

LINSTOR is deployed via piraeus-operator without master passphrase specified in CR but it is entered manually by security officer.
There are some snapshots created on S3 using backup shipping feature.

After restart linstor-csi-driver throwing the exception:

time="2022-07-14T07:22:53Z" level=info msg="server started" address=/var/lib/csi/sockets/pluginproxy/./csi.sock linstorCSIComponent=driver nodeID=kube-master-0 provisioner=linstor.csi.linbit.com version=v0.19.1
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x135c4f3]

goroutine 61 [running]:
github.com/piraeusdatastore/linstor-csi/pkg/client.(*Linstor).snapOrBackupById(0xc000460c60, {0x190c878, 0xc0005304b0}, {0xc0004623c0, 0x2d})
	/usr/local/go/linstor-csi/pkg/client/linstor.go:1372 +0x6f3
github.com/piraeusdatastore/linstor-csi/pkg/client.(*Linstor).FindSnapByID(0x1916170?, {0x190c878?, 0xc0005304b0?}, {0xc0004623c0?, 0x0?})
	/usr/local/go/linstor-csi/pkg/client/linstor.go:1306 +0x45
github.com/piraeusdatastore/linstor-csi/pkg/driver.Driver.DeleteSnapshot({{0x190f528, 0xc000460c60}, {0x190f000, 0xc000460c60}, {0x1901848, 0xc000460c60}, {0x190e7f8, 0xc000460c60}, {0x18f8760, 0xc000460c60}, ...}, ...)
	/usr/local/go/linstor-csi/pkg/driver/driver.go:965 +0x1a3
github.com/container-storage-interface/spec/lib/go/csi._Controller_DeleteSnapshot_Handler.func1({0x190c878, 0xc0005304b0}, {0x1613920?, 0xc00045acc0})
	/go/pkg/mod/github.com/container-storage-interface/[email protected]/lib/go/csi/csi.pb.go:5838 +0x78
github.com/piraeusdatastore/linstor-csi/pkg/driver.Driver.Run.func1({0x190c878?, 0xc0005304b0?}, {0x1613920, 0xc00045acc0}, 0xc0004f4740, 0x1500020?)
	/usr/local/go/linstor-csi/pkg/driver/driver.go:1161 +0x63
github.com/container-storage-interface/spec/lib/go/csi._Controller_DeleteSnapshot_Handler({0x16bddc0?, 0xc0000f9440}, {0x190c878, 0xc0005304b0}, 0xc000475740, 0xc000476050)
	/go/pkg/mod/github.com/container-storage-interface/[email protected]/lib/go/csi/csi.pb.go:5840 +0x138
google.golang.org/grpc.(*Server).processUnaryRPC(0xc000478000, {0x190f5e8, 0xc000102d00}, 0xc00046b440, 0xc0004610e0, 0x239db18, 0x0)
	/go/pkg/mod/google.golang.org/[email protected]/server.go:1282 +0xccf
google.golang.org/grpc.(*Server).handleStream(0xc000478000, {0x190f5e8, 0xc000102d00}, 0xc00046b440, 0x0)
	/go/pkg/mod/google.golang.org/[email protected]/server.go:1616 +0xa1b
google.golang.org/grpc.(*Server).serveStreams.func1.2()
	/go/pkg/mod/google.golang.org/[email protected]/server.go:921 +0x98
created by google.golang.org/grpc.(*Server).serveStreams.func1
	/go/pkg/mod/google.golang.org/[email protected]/server.go:919 +0x28a