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: 2048
Hash: 025a5bc74db3e92cf9e2e7fd106ec6288fea372448d0d0af948245b4a7b4bb1a
Previous block: 1517968cfe70f88d2863376aa284eeb3420884b26dc11e01efd594599d7070b6
Next block: 6c1b503e80a7ff911caa1d9e1f7121d1783dd2e4b808ac3c267fa51eb60aa07b
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964778
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: b9263d8591e5be1d7f18ca3e5065351bf8bb71e0df25412bc07c9266e9515b8d
Median time: 1728964777
Difficulty: 4.656542373906925e-10
Confirmations: 196
Chainwork: 0000000000000000000000000000000000000000000000000000000000001002
Bits: 207fffff