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

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Enter a block height, e.g. 123, or the start of a bitcoin address, e.g. mressCpnG

Height: 193
Hash: 60add3f63845d47803b9e149a276f24d5ab0ddc785623f4460a173b0b42675c1
Previous block: 55a75137721698c3a803564162abf1c192576e45ed469ce84ea50d89270acea0
Next block: 440e76c1c5696e85e1d132fc80d30e03fa916abe0038e17f829ae544e5deefde
Weight: 912
Versionhex: 30000003
Version: 805306371
Time: 1544074765
Stripped size: 228
Size: 228
Nonce: 0
Merkle root: 2c280ce49d9e67052705977c96b752cc299ee88a302172040f45a4035d8a9790
Median time: 1544074765
Difficulty: 4.656542373906925e-10
Confirmations: 9
Chainwork: 0000000000000000000000000000000000000000000000000000000000000184
Bits: 207fffff