RMA crash "no such key"

[ghost]

Hi
I'm trying to run rma on our redis instance, but it crashed after few hours of work. Here is the stacktrace:
WARNING:rma.rule.ValueString:Invalid encoding from server for keyevent:data:1HDcLhTraceback (most recent call last): File "/usr/bin/rma", line 11, in <module> sys.exit(main()) File "/usr/lib/python3.5/site-packages/rma/cli/rma_cli.py", line 60, in main app.run() File "/usr/lib/python3.5/site-packages/rma/application.py", line 113, in run str_res += self.do_ram(res) File "/usr/lib/python3.5/site-packages/rma/application.py", line 147, in do_ram ret += (rule.analyze(aggregate_patterns)) File "/usr/lib/python3.5/site-packages/rma/rule/ValueString.py", line 67, in analyze with RealStringEntry(key_name=x, redis=self.redis) as stat: File "/usr/lib/python3.5/site-packages/rma/rule/ValueString.py", line 37, in __init__ sdslen_response = redis.debug_sdslen(key_name) File "/usr/lib/python3.5/site-packages/rma/redis.py", line 225, in debug_sdslen return parse_debug(self.execute_command("DEBUG SDSLEN", key)) File "/usr/lib/python3.5/site-packages/redis/client.py", line 573, in execute_command return self.parse_response(connection, command_name, **options) File "/usr/lib/python3.5/site-packages/redis/client.py", line 585, in parse_response response = connection.read_response() File "/usr/lib/python3.5/site-packages/redis/connection.py", line 582, in read_response raise response redis.exceptions.ResponseError: no such key