airmozilla docker-compose up fail

output.log

Step 12 : RUN pip install -r requirements.txt                                            
 ---> Running in d61643e62635                                                            
Exception:                                                                               
Traceback (most recent call last):                                                       
  File "/usr/lib/python2.7/dist-packages/pip/basecommand.py", line 122, in main          
    status = self.run(options, args)                                                     
  File "/usr/lib/python2.7/dist-packages/pip/commands/install.py", line 262, in run      
    for req in parse_requirements(filename, finder=finder, options=options, session=sessi
on):                                                                                     
  File "/usr/lib/python2.7/dist-packages/pip/req.py", line 1632, in parse_requirements   
    req = InstallRequirement.from_line(line, comes_from, prereleases=getattr(options, "pr
e", None))                                                                               
  File "/usr/lib/python2.7/dist-packages/pip/req.py", line 173, in from_line             
    return cls(req, comes_from, url=url, prereleases=prereleases)                        
  File "/usr/lib/python2.7/dist-packages/pip/req.py", line 71, in __init__               
    req = pkg_resources.Requirement.parse(req)                                           
  File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 2667, in parse          
    reqs = list(parse_requirements(s))                                                   
  File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 2605, in parse_requireme
nts                                                                                      
    line, p, specs = scan_list(VERSION,LINE_END,line,p,(1,2),"version spec")             
  File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 2583, in scan_list      
    "Expected ',' or end-of-list in",line,"at",line[p:]                                  
ValueError: ("Expected ',' or end-of-list in", 'psycopg2==2.6.1 \\', 'at', ' \\')        
                                                                                         
Storing debug log for failure in /root/.pip/pip.log                                      
ERROR: Service 'web' failed to build: The command '/bin/sh -c pip install -r requirements
.txt' returned a non-zero code: 2