Ошибка "Internal JSON-RPC" в MetaMask? Вот как её исправить

Stuck with that annoying JSON-RPC error? Don’t panic—it’s usually a quick fix. Here’s what to check:

1. Network Setup is Off First thing: did you actually add the network correctly? MetaMask can be picky about RPC URLs. Go to Settings > Networks > Add Network and double-check the details against the official docs. One typo and the whole thing breaks.

2. You’re Running on Empty (Gas-wise) Every blockchain needs its native token for gas. No ETH on Ethereum? No BNB on BSC? That’s your problem. You need actual tokens in your wallet to execute transactions, not just for the contract itself.

3. Your MetaMask is Outdated Yeah, I know you probably updated it… last year. Head to Chrome Web Store or your app store and grab the latest version. Devs patch these issues regularly.

4. RPC Endpoint is Dead (or Slow) Sometimes the default RPC is just choking. Try switching endpoints—Settings > Networks > [problematic network] > Edit RPC URL. Many chains have multiple public endpoints; swap it out and retry.

Pro tip: If you’re constantly hitting RPC errors, consider using a dedicated node service like Alchemy or Infura instead of public endpoints.

Still stuck? Drop your error message in the comments—might be something else entirely.