How to resolve the error code 20 in PLAXIS 2D?https://communities.bentley.com/products/geotech-analysis/f/forum/235786/how-to-resolve-the-error-code-20-in-plaxis-2dsir, I am facing the problem of error code 20 (stiffness matrix is nearly singular and cannot be solved) in output. how can I fix this problem?en-USTelligent Community 12RE: How to resolve the error code 20 in PLAXIS 2D?https://communities.bentley.com/thread/732508?ContentTypeID=1Mon, 19 Sep 2022 11:12:53 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:fd8d5d38-a7c8-4415-8dd5-21396f62a13fStefanos Papavasileiou<p>Dear Shaija,</p> <p>Our reference manual has a dedicated appendix for the Calculation warning and errors in PLAXIS. I would advise you to check it in case you receive any errors.</p> <p>As we do not know more details of your project that would be my first suggestion.</p> <p>In order to be able to assist you with your project and identify the reason for the problem you experience, please submit a service request.</p> <p>Then, one of our support engineers can help you in detail: <a href="https://apps.bentley.com/srmanager/ProductSupport">https://apps.bentley.com/srmanager/ProductSupport</a></p><div style="clear:both;"></div>