invalid memory address or nil pointer dereference

[kdfight]

During the test of the api interface, there is an error:
the trace is :

panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x18 pc=0x5cc5b3]

goroutine 98467 [running]:
net.(*Resolver).lookupIPAddr(0x157c240, {0xfb13c0?, 0xc00146e660}, {0xe5e1e1, 0x3}, {0xc0003c0b00, 0x34})
/app/program/go1.18.2/src/net/lookup.go:344 +0x8b3
net.(*Resolver).internetAddrList(0xfb13c0?, {0xfb13c0?, 0xc00146e660?}, {0xe5e1e1, 0x3}, {0xc0003c0b00?, 0x39?})
/app/program/go1.18.2/src/net/ipsock.go:288 +0x67a
net.(*Resolver).resolveAddrList(0x15af0d8?, {0xfb13c0, 0xc00146e660}, {0xe5e821, 0x4}, {0xe5e1e1?, 0x203000?}, {0xc0003c0b00, 0x39}, {0x0, ...})
/app/program/go1.18.2/src/net/dial.go:221 +0x41b
net.(*Dialer).DialContext(0xc0008ade18, {0xfb13c0, 0xc00146e660}, {0xe5e1e1, 0x3}, {0xc0003c0b00, 0x39})
/app/program/go1.18.2/src/net/dial.go:406 +0x448
github.com/go-redis/redis/v8.(*Options).init.func1({0xfb13c0?, 0xc00146e660?}, {0xe5e1e1?, 0x0?}, {0xc0003c0b00?, 0x490f60?})
/root/go/pkg/mod/github.com/go-redis/redis/[email protected]/options.go:138 +0x107
github.com/go-redis/redis/v8.newConnPool.func1({0xfb13c0?, 0xc00146e660?})
/root/go/pkg/mod/github.com/go-redis/redis/[email protected]/options.go:419 +0x3b
github.com/go-redis/redis/v8/internal/pool.(*ConnPool).dialConn(0xc0001401e0, {0xfb13c0?, 0xc00146e660?}, 0x1)
/root/go/pkg/mod/github.com/go-redis/redis/[email protected]/internal/pool/pool.go:198 +0xcc
github.com/go-redis/redis/v8/internal/pool.(*ConnPool).newConn(0xc0001401e0, {0xfb13c0?, 0xc00146e660?}, 0x1)
/root/go/pkg/mod/github.com/go-redis/redis/[email protected]/internal/pool/pool.go:162 +0x6e
github.com/go-redis/redis/v8/internal/pool.(*ConnPool).Get(0xc0001401e0, {0xfb13c0, 0xc00146e660})
/root/go/pkg/mod/github.com/go-redis/redis/[email protected]/internal/pool/pool.go:277 +0x16b
github.com/go-redis/redis/v8.(*baseClient).getConn(0xc000118ca0, {0xfb13c0, 0xc00146e660})
/root/go/pkg/mod/github.com/go-redis/redis/[email protected]/redis.go:194 +0x38
github.com/go-redis/redis/v8.(*baseClient).getConn(0xc000118ca0, {0xfb13c0?, 0xc00146e660?})
/root/go/pkg/mod/github.com/go-redis/redis/[email protected]/redis.go:182 +0x69
github.com/go-redis/redis/v8.(*baseClient).withConn(0xc000118ca0, {0xfb13c0?, 0xc00146e660}, 0xc000c1eff0)
/root/go/pkg/mod/github.com/go-redis/redis/[email protected]/redis.go:274 +0x73
github.com/go-redis/redis/v8.(*baseClient).process(0xc000118ca0, {0xfb13c0, 0xc00146e660}, {0xfb7868?, 0xc000c3a2a0}, 0x0?)
/root/go/pkg/mod/github.com/go-redis/redis/[email protected]/redis.go:329 +0x114
github.com/go-redis/redis/v8.(*baseClient).process(0xc000118ca0, {0xfb13c0, 0xc00146e660}, {0xfb7868, 0xc000c3a2a0})
/root/go/pkg/mod/github.com/go-redis/redis/[email protected]/redis.go:311 +0x79
github.com/go-redis/redis/v8.hooks.process({{0x0?, 0x0?, 0x0?}}, {0xfb13c0?, 0xc00146e660?}, {0xfb7868, 0xc000c3a2a0}, 0x60?)
/root/go/pkg/mod/github.com/go-redis/redis/[email protected]/redis.go:54 +0x7a
github.com/go-redis/redis/v8.(*Client).Process(0xc0008ae360?, {0xfb13c0?, 0xc00146e660?}, {0xfb7868?, 0xc000c3a2a0?})
/root/go/pkg/mod/github.com/go-redis/redis/[email protected]/redis.go:596 +0x70
github.com/go-redis/redis/v8.cmdable.Get(0xc000116920, {0xfb13c0?, 0xc00146e660}, {0xc0012d17d0, 0xd})
/root/go/pkg/mod/github.com/go-redis/redis/[email protected]/commands.go:786 +0x122
admp-data/internal/data.(*mediaRepo).GetPromoteTabCache(0xc0008ae750, {0xfb13c0, 0xc00146e660}, 0x80?)
/data/jenkins/workspace/taqu---test5---mp---mp-admp-data/source_code/internal/data/media.go:68 +0x8d
admp-data/internal/biz.(*MediaCase).setMediaCache(, {, }, {, }, {{{0xe6247b, 0x7}, 0x1, 0x1, 0x80a, ...}, ...}, ...)
/data/jenkins/workspace/taqu---test5---mp---mp-admp-data/source_code/internal/biz/media.go:180 +0x8c
admp-data/internal/biz.(*MediaCase).HandleMediaData(, {_, _}, {{0xe6247b, 0x7}, 0x80a, 0x2f13, 0x1, 0x1, {0xc000de4be0, ...}, ...})
/data/jenkins/workspace/taqu---test5---mp---mp-admp-data/source_code/internal/biz/media.go:100 +0x2a7
created by admp-data/internal/biz.(*MediaCase).MediaHandle
/data/jenkins/workspace/taqu---test5---mp---mp-admp-data/source_code/internal/biz/media.go:53 +0x485

so who can help me ?