WFS 1.0 and WCS 2.0 test suites fail with IllegalStateException: Already connected

[dstenger]

Describe the bug
When WFS 1.0 and WCS 2.0 test suites are executed, several tests fail with following error message:

Error in call to extension function {public org.w3c.dom.NodeList com.occamlab.te.TECore.request(org.w3c.dom.Document,java.lang.String) throws java.lang.Throwable}: Exception in extension function java.lang.IllegalStateException: Already connected 

This failure is not expected and seems to be connected to TEAM Engine v5.5 as it does not occur with TEAM Engine v5.4.1.

The bug was detected with TEAM Engine v5.5.1.

To Reproduce
Steps to reproduce the behavior:

1. Open https://cite.ogc.org/te2/.
2. Validate https://cite.deegree.org/deegree-webservices-3.4.30/services/wfs100?service=WFS&request=GetCapabilities with WFS 1.0 test suite.
3. Test results display the error described above.

Expected behavior
The error described above shall not occur.

Screenshots

[dstenger]

@bpross-52n Can you please take a look at this bug?