What does a ping result of "Destination unreachable" and "Host unreachable" mean?

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hey everyone,

I am new here, and I am not an wireshark expert, I met this problem, our site became inreachable, when I ping I got this message using wireshark.

Internet Protocol Version 4, **Src: SITE IP**, **Dst: MY LAPTOP**

Internet Control Message Protocol
Type: 3 (Destination unreachable)
Code: 1 (Host unreachable)
Checksum: 0x7513 [correct]
[Checksum Status: Good]
Unused: 00000000
Internet Protocol Version 4, **Src: MY LAPTOP, Dst: SITE IP**
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
        0000 00.. = Differentiated Services Codepoint: Default (0)
        .... ..00 = Explicit Congestion Notification: Not ECN-Capable Transport (0)
    Total Length: 60
    Identification: 0x8e7f (36479)
    000. .... = Flags: 0x0
    ...0 0000 0000 0000 = Fragment Offset: 0
    Time to Live: 110
    Protocol: ICMP (1)
    Header Checksum: 0x16b6 [validation disabled]
    [Header checksum status: Unverified]
    Source Address: MY LAPTOP
    Destination Address: SITE IP
Internet Control Message Protocol

THANKS