Error after restore

[Gaël Princivalle]

Hello.

I've restored from backup a compiled application called hydrover_oleodinamica.

Now only on the files that are called from Ajax I've got this 500 internal server error:

(dp1 S'output' p2 S" need more than 1 value to unpack" p3 sS'layer' p4 S'/home/tasko/webapps/w2p_2_14_16/web2py/applications/hydrover_oleodinamica/compiled/controllers.default.config.pyc' p5 sS'code' p6 S' at 0x7f946e799030, file "/home/tasko/webapps/w2p_2_14_16/web2py/applications/hydrover_oleodinamica/compiled/controllers.default.config.py", line 4>' p7 sS'snapshot' p8 (dp9 S'exception' p10 (dp11 S'__hash__' p12 S"" p13 sS'__setattr__' p14 S"" p15 sS'__reduce_ex__' p16 S'' p17 sS'__getslice__' p18 S"" p19 sS'__getitem__' p20 S"" p21 sS'__setstate__' p22 S'' p23 sS'args' p24 S"('need more than 1 value to unpack',)" p25 sS'__reduce__' p26 S'' p27 sS'__str__' p28 S"" p29 sS'__format__' p30 S'' p31 sS'__getattribute__' p32 S"" p33 sS'__class__' p34 S"" p35 sS'__unicode__' p36 S'' p37 sS'__delattr__' p38 S"" p39 sS'__subclasshook__' p40 S'' p41 sS'__repr__' p42 S"" p43 sS'__dict__' p44 S'{}' p45 sS'__sizeof__' p46 S'' p47 sS'__doc__' p48 S"'Inappropriate argument value (of correct type).'" p49 sS'__init__' p50 S"" p51 sS'__new__' p52 S'' p53 ssS'evalue' p54 S'need more than 1 value to unpack' p55 sS'request' p56 cgluon.html XML_unpickle p57 (S's\xf5s\x00\x00

For example here:

https://www.hydrover.it/en/search_product

Or here:

https://www.hydrover.it/en/applications

Someone know how I can resolve it?