Perl Interpreter Error

I get below error while executing the script on Zimbra Server.
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-bash: ./check_zimbra_mailboxquota.pl: /usr/bin/perl^M: bad interpreter: No such file or directory
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But, my perl file location is same as mentioned in the script. Please See below command output:

which perl
/usr/bin/perl

What should I do now? Something is missing in the script.

Kindly resolve.