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: 2135
Hash: 1ec1959b19fdc83a692ed829ea531a5aef9621ad1650936ae62f90712beee655
Previous block: 32c39567ccad44a08fa75a2a3c714590d23f6120e7c6d16c04fd25b177b3b24c
Next block: 47ee694224440a21e4afa7ad9a8fea29c98f974bcfcb0473e865e6233cc644ef
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964792
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: d8a2d70d3b5f1bae909da2032a4f84326cadc5aa31664d39bb2102be130d9998
Median time: 1728964792
Difficulty: 4.656542373906925e-10
Confirmations: 109
Chainwork: 00000000000000000000000000000000000000000000000000000000000010b0
Bits: 207fffff