panic: runtime error: invalid memory address or nil pointer dereference

[kj9361]

Plugin is not working. I don't know what can be the cause.

[2021/06/05 19:06:25] [debug] [task] created task=0x7f9ac9e37280 id=0 OK
[0] dummy_data: [1622900181.562569900, {"payload"=>"TEST PAYLOAD", "trans"=>"", "external"=>"", "product"=>"ALL", "app"=>"App", "verb"=>"POST"}]
[2021/06/05 19:06:25] [trace] [GO] entering go_flush()
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x7f9af54c2b68]
goroutine 17 [running, locked to thread]:
cloud.google.com/go/pubsub.(*PublishResult).Ready(...)
/home/go/pkg/mod/cloud.google.com/go@v0.37.4/pubsub/topic.go:367
cloud.google.com/go/pubsub.(*PublishResult).Get(0x0, 0x7f9af586e990, 0xc00009a000, 0x7f9af573dc60, 0x7f9af56cd1d0, 0x0, 0xc0004c85d0)
/home/go/pkg/mod/cloud.google.com/go@v0.37.4/pubsub/topic.go:374 +0x28
main.FLBPluginFlush(0x7f9ac9e99240, 0x220, 0x7f9ac9e000c0, 0x7f9af5060001)
/home/pubsub/fluent-bit-pubsub/output_pubsub.go:170 +0x2f9
Aborted (core dumped)