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: 2192
Hash: 5b8f3bb38ef723156c178b22dde6d36a61f25ef96fad7b6a5eec5d5142f2d3eb
Previous block: 5dcb2abb7d8b807e1ce7d89dab66ce9622c6c8fac56662128f131232b8eab0e7
Next block: 1e5533bef1de0722d9096f1719887704fb3669fd2278e30db30caa0a079eddff
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964802
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: a453d5eb8ffa3957fead1034a91eedbeebc38e56f5e1ae6089f2a8ffd21ad599
Median time: 1728964801
Difficulty: 4.656542373906925e-10
Confirmations: 52
Chainwork: 0000000000000000000000000000000000000000000000000000000000001122
Bits: 207fffff