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: 441
Hash: 59ef54aeeeeeffbfae8a43b7fba49b9a0ca6fb32724f0dce3048ab79bd017f68
Previous block: 51c9d3abda0a54d5c99680db13eadfa673ca1d788810edef4d090964c39ad9a5
Next block: 5aaa3e9c77f14c5b27b4b2cd7b0e399d509bbc463e84d685cd8b8227bacc39ce
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864217
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 670d22731f9c77ae58c697c43dd8fe20110f003d16ea966cf6e783d8ea50db39
Median time: 1701864216
Difficulty: 4.656542373906925e-10
Confirmations: 1803
Chainwork: 0000000000000000000000000000000000000000000000000000000000000374
Bits: 207fffff