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. mgqFp9Dhy

Height: 2191
Hash: 5dcb2abb7d8b807e1ce7d89dab66ce9622c6c8fac56662128f131232b8eab0e7
Previous block: 4ad99c19ec85648911af0891473bb10d0de497dee23178acf5d1563ce28cb349
Next block: 5b8f3bb38ef723156c178b22dde6d36a61f25ef96fad7b6a5eec5d5142f2d3eb
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964802
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: cfd45e24f78813dd7c1d0d8e0340b42bf99dcc0bb6cb2e249569990b0638e528
Median time: 1728964801
Difficulty: 4.656542373906925e-10
Confirmations: 53
Chainwork: 0000000000000000000000000000000000000000000000000000000000001120
Bits: 207fffff