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: 2028
Hash: 5b1b055691bdfdb74fc0d9570c33d2bfb8826e7aedb62a08b9cda5e0591b13ad
Previous block: 65e46924ee886090e5b509282a4d6a9b482d3685d4276e5769b7952cc5224a19
Next block: 36ccb871bb89a8a6339831cbb33ad971568beba21a9713bd12ec744c539510b0
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964775
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 3dc0061720c3a2e642078c859895ab2817f17f68489d53cf0854a98ae00b03bd
Median time: 1728964774
Difficulty: 4.656542373906925e-10
Confirmations: 216
Chainwork: 0000000000000000000000000000000000000000000000000000000000000fda
Bits: 207fffff