Error: code = Unavailable desc = upstream connect error or disconnect/reset before headers. reset reason: overflow

Hey everyone,
are there currently any issues with the Testnet? The status is “healthy”

I just got this error twice while trying to execute my transaction (it never happened before in the previous months):

Waiting for transaction XXXXXXXXXXXXXXXXXXXXXXX to be sealed…
…err: client: rpc error: code = Unavailable desc = upstream connect error or disconnect/reset before headers. reset reason: overflow
panic: client: rpc error: code = Unavailable desc = upstream connect error or disconnect/reset before headers. reset reason: overflow

goroutine 1 [running]:
github.com/onflow/flow-go-sdk/examples.Handle({0x2077160, 0xc000ee1600})
/Users/XXX/go/pkg/mod/github.com/onflow/[email protected]/examples/examples.go:251 +0xb3
github.com/onflow/flow-go-sdk/examples.WaitForSeal({0x2090a88, 0xc000124000}, 0xc3cb34820a7111e4, {0x53, 0x1a, 0x9, 0xc, 0x51, 0xf, 0x38, …})
/Users/XXX/go/pkg/mod/github.com/onflow/[email protected]/examples/examples.go:265 +0x19b