Contract failed when contract service is not set

[zhangkang0911]

panic recovered: reflect: call of reflect.Value.IsNil on zero Value
goroutine 69 [running]:
github.com/samber/slog-http.Recovery.func1.1()
/go/pkg/mod/github.com/samber/slog-http@v1.3.1/recovery.go:14 +0x8b
panic({0x1330d80?, 0xc005cd2a80?})
/usr/local/go/src/runtime/panic.go:785 +0x136
reflect.Value.IsNil({0x0, 0x0, 0x0})
/usr/local/go/src/reflect/value.go:1558 +0x172
github.com/go-dataspace/run-dsp/dsp.(*dspHandlers).providerContractRequestHandler(0xc0003149a0, {0x17d6df0, 0xc000227aa0}, 0xc0003b12c0)
/app/dsp/contract_handlers.go:131 +0xbf7
github.com/go-dataspace/run-dsp/dsp.WrapHandlerWithError.func1({0x17d6df0, 0xc000227aa0}, 0xc0003b1180)
/app/dsp/error_wrapper.go:44 +0x5e
net/http.HandlerFunc.ServeHTTP(0xc0000a9860, {0x17d6df0, 0xc000227aa0}, 0xc0003b1180)
/usr/local/go/src/net/http/server.go:2220 +0x33
net/http.(*ServeMux).ServeHTTP(0xc0001ca2a0, {0x17d6df0, 0xc000227aa0}, 0xc0003b1180)
/usr/local/go/src/net/http/server.go:2747 +0x3c2
github.com/go-dataspace/run-dsp/internal/authforwarder.HTTPMiddleware.func1({0x17d6df0, 0xc000227aa0}, 0xc0003b1180)
/app/internal/authforwarder/httpmiddleware.go:35 +0x115
net/http.HandlerFunc.ServeHTTP(0xc00025c210, {0x17d6df0, 0xc000227aa0}, 0xc0003b1040)
/usr/local/go/src/net/http/server.go:2220 +0x33
github.com/go-dataspace/run-dsp/internal/server.jsonHeaderMiddleware.func1({0x17d6df0, 0xc000227aa0}, 0xc0003b1040)
/app/internal/server/header_middleware.go:44 +0x5b2
net/http.HandlerFunc.ServeHTTP(0xc00025c228, {0x17d6df0, 0xc000227aa0}, 0xc0003b1040)
/usr/local/go/src/net/http/server.go:2220 +0x33
github.com/go-dataspace/run-dsp/logging.NewMiddleware.func1.1({0x17d6df0, 0xc000227aa0}, 0xc0003b1040)
/app/logging/http_middleware.go:36 +0x482
net/http.HandlerFunc.ServeHTTP(0xc0002d6260, {0x17d6df0, 0xc000227aa0}, 0xc0003b0dc0)
/usr/local/go/src/net/http/server.go:2220 +0x33
github.com/samber/slog-http.NewWithConfig.func1.1({0x17d6bd0, 0xc005cd60e0}, 0xc0003b0dc0)
/go/pkg/mod/github.com/samber/slog-http@v1.3.1/middleware.go:250 +0x622
net/http.HandlerFunc.ServeHTTP(0xc000678e40, {0x17d6bd0, 0xc005cd60e0}, 0xc0003b0c80)