The explorer is running in 'regtest' mode. This saves disk space, but there is limited data.
The code for this application can be found at github.com/pdxrod/blockchain_explorer.

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Enter a block height, e.g. 123, or the start of a bitcoin address, e.g. mxMfLjAez

Height: 911
Hash: 2b147848d78bd3a2ead34690f120e7bd56c465d8ebdf043a286615799d0307fd
Previous block: 255181414f64d28d724a577a8d4014633b258e54cb2190d22647b20592a921f6
Next block: 000bb7c7a4bf3a9e62adb3b4bd002127342827eea2c4823ec62606e51b1744c0
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857820
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: f20a234e2b558035ed71d01f78a9bbc7f56f5b8a10856bdff6eed8d99683f849
Median time: 1707857819
Difficulty: 4.656542373906925e-10
Confirmations: 1333
Chainwork: 0000000000000000000000000000000000000000000000000000000000000720
Bits: 207fffff