Contact your webhost to reset the php configuration same as below

upload_max_filesize = 200M (or more)
post_max_size = 200M (or more)
max_execution_time = 6000 (or more)
max_input_time = 6000 (or more)
memory_limit = 128M (or more)
session.gc_maxlifetime = 14000 (or more)