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: 1911
Hash: 6546d60257b68494b22828f2fcad46e04d6ecad6806b0678f8a62ceaecaa7d27
Previous block: 495e0af15aa118a985358cd1c2a8f931eb95f1415e8a6f8382b08ddb46effc2d
Next block: 70d21c8d4a5ecdbf3799ac96913c13ce6f13651d754c5bc29c3b2cdf8bf2644e
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159242
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 6b3008123ae60ba2217a141cde6863b96d2b3e77c9b6484f9676dd6faa96a3f6
Median time: 1719159241
Difficulty: 4.656542373906925e-10
Confirmations: 333
Chainwork: 0000000000000000000000000000000000000000000000000000000000000ef0
Bits: 207fffff