Retraining model VGG_ILSVRC_16_layers.caffemodel throws errors

[MohanaRC]

I have been trying to retrain the VGG_ILSVRC_16_layers.caffemodel and I keep getting the following error,

I0705 15:55:07.324955 11522 caffe.cpp:155] Finetuning from home/xxx/dense_crowd_counting/VGG_ILSVRC_16_layers.caffemodel
HDF5-DIAG: Error detected in HDF5 (1.8.16) thread 140543368136512:
#000: ../../../src/H5F.c line 439 in H5Fis_hdf5(): unable open file
major: File accessibilty
minor: Not an HDF5 file
#1: ../../../src/H5Fint.c line 554 in H5F_is_hdf5(): unable to open file
major: Low-level I/O
minor: Unable to initialize object
#2: ../../../src/H5FD.c line 993 in H5FD_open(): open failed
major: Virtual File Layer
minor: Unable to initialize object
#3: ../../../src/H5FDsec2.c line 339 in H5FD_sec2_open(): unable to open file: name = 'home/xxx/dense_crowd_counting/VGG_ILSVRC_16_layers.caffemodel', errno = 2, error message = 'No such file or directory', flags = 0, o_flags = 0
major: File accessibilty
minor: Unable to open file
HDF5-DIAG: Error detected in HDF5 (1.8.16) thread 140543368136512:
#000: ../../../src/H5F.c line 604 in H5Fopen(): unable to open file
major: File accessibilty
minor: Unable to open file
#1: ../../../src/H5Fint.c line 992 in H5F_open(): unable to open file: time = Wed Jul 5 15:55:07 2017
, name = 'home/xxx/dense_crowd_counting/VGG_ILSVRC_16_layers.caffemodel', tent_flags = 0
major: File accessibilty
minor: Unable to open file
#2: ../../../src/H5FD.c line 993 in H5FD_open(): open failed
major: Virtual File Layer
minor: Unable to initialize object
#3: ../../../src/H5FDsec2.c line 339 in H5FD_sec2_open(): unable to open file: name = 'home/xxx/dense_crowd_counting/VGG_ILSVRC_16_layers.caffemodel', errno = 2, error message = 'No such file or directory', flags = 0, o_flags = 0
major: File accessibilty
minor: Unable to open file
F0705 15:55:07.381656 11522 net.cpp:791] Check failed: file_hid >= 0 (-1 vs. 0) Couldn't open home/xxx/dense_crowd_counting/VGG_ILSVRC_16_layers.caffemodel
*** Check failure stack trace: ***
@ 0x7fd2ccc7195d google::LogMessage::Fail()
@ 0x7fd2ccc736e0 google::LogMessage::SendToLog()
@ 0x7fd2ccc71543 google::LogMessage::Flush()
@ 0x7fd2ccc740ae google::LogMessageFatal::~LogMessageFatal()
@ 0x7fd2cd20ee78 caffe::Net<>::CopyTrainedLayersFromHDF5()
@ 0x7fd2cd213154 caffe::Net<>::CopyTrainedLayersFrom()
@ 0x40b124 CopyLayers()
@ 0x40c65a train()
@ 0x4081e0 main
@ 0x7fd2cc006830 (unknown)
@ 0x408b39 _start
Aborted (core dumped)

I am not sure what is causing the error.

I am using Ubuntu 16.04 and Python 2.7
I ran the following statement for the training process
/home/xxx/caffe/build/tools/caffe train -solver /home/xxx/dense_crowd_counting/models/dcc_crowdnet/solver.prototxt -weights home/xxx/dense_crowd_counting/VGG_ILSVRC_16_layers.caffemodel