Problem with apt update: The package lists or status file could not be parsed or opened

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I'm unable to update any packages on my 20.4.4 distribution. When I do 'sudo apt update', I get:

Get:1 focal-security InRelease [114 kB]                                     
Get:2 focal InRelease [18,1 kB]                              
Get:3 focal-security/main amd64 Packages [2 082 kB]
Get:4 focal/main Sources [3 632 B]
Get:5 focal InRelease [265 kB]                                            
Get:110 focal-backports/universe amd64 c-n-f Metadata [880 B]                                     
Get:111 focal-backports/multiverse amd64 c-n-f Metadata [116 B]                                   
Fetched 53,9 MB in 18s (3 028 kB/s)                                                                                                   
Reading package lists... Error!
E: Problem parsing dependency 21 of openssh-server:amd64=1:8.2p1-4ubuntu0.2
E: Error occurred while processing openssh-server (NewVersion2)
E: Problem with MergeList /var/lib/dpkg/status
E: The package lists or status file could not be parsed or opened.

I tried sudo rm -rf /var/lib/apt/lists/* then sudo apt update but it returns the same error.

I really don't know what to try or do. Thanks in advance for your help on this!


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