Error when migrating to rinkeby test network

Hello there,

I migrate contract to rinkeby test netwotk from this tutorial https://youtu.be/8ElPDw0laIo?t=3774 , but I have an error:

…\lottery\node_modules\eth-block-tracker\src\polling.js:51
const newErr = new Error(PollingBlockTracker - encountered an error while attempting to update latest block:\n${err.stack})
^
Error: PollingBlockTracker - encountered an error while attempting to update latest block:
undefined
at PollingBlockTracker._performSync (E:\cc\gamedev\lottery\lottery\node_modules\eth-block-tracker\src\polling.js:51:24)
at processTicksAndRejections (internal/process/task_queues.js:95:5)
at runNextTicks (internal/process/task_queues.js:64:3)
at listOnTimeout (internal/timers.js:526:9)
at processTimers (internal/timers.js:500:7)
UnhandledRejections detected

I added networkCheckTimeout: 1000000, but it doesn’t help.

Could anyone help me, please?

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hey @Dmytro_Shcherbak send us a ticket here and we’ll gladly assist: https://trufflesuite.zendesk.com/hc/en-us

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