Database Query Error:

Table './db_blitzortung/mybo_strikes' is marked as crashed and last (automatic?) repair failed

for query

SELECT s.time time, COUNT(s.id) cnt  ,  (s.part>0)  participated , 0 extra, SUM(s.deviation) extra_sum 
				FROM mybo_strikes s
				
				WHERE s.time BETWEEN '2018-07-17 16:30:00' AND '2018-07-18 16:30:00'
				
				GROUP BY FLOOR(UNIX_TIMESTAMP(s.time) / 60 / 30), participated, extra