ggplot绘图报错

使用ggplot出现以下报错，不知道是哪个元素出错了，请问一下应该怎么修改


ggplot(Cellratio) + 
+   geom_bar(aes(x =GSM, y= Freq, fill = Celltype),stat = "identity",width = 0.7,size = 0.5,colour = '#222222')+ 
+   theme_classic() +
+   labs(x='Cell cycle phase',y = 'Ratio')+
+   theme(panel.border = element_rect(fill=NA,color="black", size=0.5, linetype="solid"),legend.position = "right")+   # 图例："left" 左, "right" 右,  "bottom" 下, "top" 上
+   scale_fill_manual(values=colaa[sample(1:length(colaa), size = 25)])+
+   theme_bw()+
+   xlab(NULL)+
+   theme(axis.text.x  = element_blank())+
+   guides(fill = guide_legend( ncol = 1, byrow = TRUE))+
+   facet_grid(. ~ Type,scales="free")+
+   theme(strip.text.x = element_text(size = 30,colour = "black"))+       #分面字体颜色
+   theme(strip.background.x = element_rect(fill = c("white"), colour = "black")) #分面颜色
+ ggsave("immune.ration.pdf",width = 15,height = 8)        #输出图片
Error: unexpected symbol in:
"  theme(strip.background.x = element_rect(fill = c("white"), colour = "black")) #分面颜色
ggsave"

多了个+号，改完这样的

ggplot(Cellratio) + 
  geom_bar(aes(x =GSM, y= Freq, fill = Celltype),stat = "identity",width = 0.7,size = 0.5,colour = '#222222')+ 
  theme_classic() +
  labs(x='Cell cycle phase',y = 'Ratio')+
  theme(panel.border = element_rect(fill=NA,color="black", size=0.5, linetype="solid"),legend.position = "right")+   # 图例："left" 左, "right" 右,  "bottom" 下, "top" 上
  scale_fill_manual(values=colaa[sample(1:length(colaa), size = 25)])+
  theme_bw()+
  xlab(NULL)+
  theme(axis.text.x  = element_blank())+
  guides(fill = guide_legend( ncol = 1, byrow = TRUE))+
  facet_grid(. ~ Type,scales="free")+
  theme(strip.text.x = element_text(size = 30,colour = "black"))+       #分面字体颜色
  theme(strip.background.x = element_rect(fill = c("white"), colour = "black"))) #分面颜色
ggsave("immune.ration.pdf",width = 15,height = 8)        #输出图片