InvalidFeedException / ei.a: Error parsing feed XML.

[JohnGeorgiou]

Hi,
the library was working fine.
the last days I get an error

Warning: Caught exception attempting to use SAX to load a SAX XMLReader
Warning: Exception was: tq.c: Can't create default XMLReader; is system property org.xml.sax.driver set?
Warning: I will print the stack trace then carry on using the default SAX parser
tq.c: Can't create default XMLReader; is system property org.xml.sax.driver set?
at qf.a.r(SourceFile:232)
at jq.c.a(SourceFile:95)
at xb.cy1.e(SourceFile:9)
at xb.ue0.(SourceFile:13)
at um.h1.a(SourceFile:28)
at z9.n.run(SourceFile:51)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
at java.lang.Thread.run(Thread.java:920)

Exception: InvalidFeedException / ei.a: Error parsing feed XML.