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: 923
Hash: 0fbd8cdc92d92db597d399e4b715b78c3746e1c9c2c45cb0c53dd1908c77b7dd
Previous block: 66d82931a8776791a3a173579c5f4aee3e532d3b2bdd9f1f0ecb6c38264847d2
Next block: 3704ba2a8b00750fa9d97bddbb2a15b6c447fc7bca74b856fccc8372d3ba05d7
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857822
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: ff81f16aa40b6de9a4dc48b42779ddca187e9777926e600ed5f95eaae0cb42ae
Median time: 1707857821
Difficulty: 4.656542373906925e-10
Confirmations: 1321
Chainwork: 0000000000000000000000000000000000000000000000000000000000000738
Bits: 207fffff