Eclipse (STS) to Bitbucket Communication

I’m receiving the following error trying to git pull/push the code into a remote Bitbucket repository:

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however the same operation works fine from the command line.

How could I debug the situation further / fix it?

Here are the relevant git configurations on the CLI:

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as well as in STS (Eclipse):

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Here’s Eclipse info:

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Thank you in advance for the pointers leading to a solution.

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