Npm installation fails with 'Hash Sum mismatch' for gyp

Lubuntu Support
1

Trying to install npm on my Lubuntu 20.04 system. Have already done sudo apt update and sudo apt upgrade prior to this, but when I run sudo apt install npm it fails with this Hash Sum mismatch error. any clues as to what’s up ?

After this operation, 67.5 MB of additional disk space will be used.
Do you want to continue? [Y/n] Y
Get:1 http://in.archive.ubuntu.com/ubuntu focal/universe amd64 gyp all 0.1+20180428git4d467626-3ubuntu1 [237 kB]
Err:1 http://in.archive.ubuntu.com/ubuntu focal/universe amd64 gyp all 0.1+20180428git4d467626-3ubuntu1
  Hash Sum mismatch
  Hashes of expected file:
   - SHA256:ae340b63ac922531b18290768ee8a448747066dc6b52c5d0ec0446b59fab2bc0
   - SHA1:e90e368bc565aca62fee1164d5d46f312423ce25 [weak]
   - MD5Sum:2633912b473630f9d314ee384b657b0f [weak]
   - Filesize:237028 [weak]
  Hashes of received file:
   - SHA256:eccb7f4bc94cae4aa584f2a5b1f21ddda81fb791b76c2ad3584d4651cce69cec
   - SHA1:771151735c5b49c571969843067f5c7b37c8cd30 [weak]
   - MD5Sum:82ff3963915cd7fc7c8af8393cd6560b [weak]
   - Filesize:237028 [weak]
  Last modification reported: Wed, 22 Jan 2020 13:38:21 +0000
Fetched 237 kB in 0s (969 kB/s)
Unable to correct missing packages.
E: Failed to fetch http://in.archive.ubuntu.com/ubuntu/pool/universe/g/gyp/gyp_0.1+20180428git4d467626-3ubuntu1_all.deb  Hash Sum mismatch
   Hashes of expected file:
    - SHA256:ae340b63ac922531b18290768ee8a448747066dc6b52c5d0ec0446b59fab2bc0
    - SHA1:e90e368bc565aca62fee1164d5d46f312423ce25 [weak]
    - MD5Sum:2633912b473630f9d314ee384b657b0f [weak]
    - Filesize:237028 [weak]
   Hashes of received file:
    - SHA256:eccb7f4bc94cae4aa584f2a5b1f21ddda81fb791b76c2ad3584d4651cce69cec
    - SHA1:771151735c5b49c571969843067f5c7b37c8cd30 [weak]
    - MD5Sum:82ff3963915cd7fc7c8af8393cd6560b [weak]
    - Filesize:237028 [weak]
   Last modification reported: Wed, 22 Jan 2020 13:38:21 +0000
E: Aborting install.
2

Have also tried sudo apt install --fix-missing npm to no avail.

3

Looking at your paste, I can see you’re using a mirror provided by Esto Internet (see https://launchpad.net/ubuntu/+archivemirrors)

FYI: I pinged in.archive.ubuntu.com that was in your paste & thus had the result that it was Esto Internet

I occasionally get errors on my local mirror (they can occur if a sync is in progress), which are normally fixed by just waiting (5-15 minutes).

If you’re impatient, or it’s not fixed with time, you can clear our your cached copy of what’s available on your sources with the command

sudo rm -rf /var/lib/apt/lists/*

then your next run of sudo apt update your system will detect it can’t update your software lists (none are there), so it’ll download all new ones.

Note: there are cases where this isn’t enough, but it usually is :slight_smile:

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4

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